Biography of King Louis of Naples 1377-1417
Paternal Family Tree: Capet
In 1360 [his father] Louis Valois Anjou I Duke Anjou (age 20) and [his mother] Marie Chatillon Duchess Anjou (age 15) were married. She by marriage Duchess Anjou. She the daughter of Charles "Saint" Chatillon Duke Brittany (age 41) and Joan "Lame" Capet Countess Penthièvre (age 41). He the son of King John "The Good" II of France (age 40) and Bonne Luxemburg Queen Consort France. They were second cousins. He a great x 5 grandson of King Henry "Curtmantle" II of England. She a great x 3 granddaughter of King Henry III of England. 
In 1360 [his father] Louis Valois Anjou I Duke Anjou (age 20) was created I Duke Anjou.
On 05 Oct 1377 King Louis of Naples was born to Louis Valois Anjou I Duke Anjou (age 38) and Marie Chatillon Duchess Anjou (age 32) at Toulose. Coefficient of inbreeding 2.60%.
On 20 Sep 1384 [his father] Louis Valois Anjou I Duke Anjou (age 45) died. His son King Louis of Naples (age 6) succeeded Louis II Duke Anjou.
In 1389 King Louis of Naples (age 11) was appointed King Naples.
The Chronicle of Adam of Usk. May 1395. The next year, at the end of May, the king returned to England, landing at Bristol; and forthwith he sent envoys into France to contract his second marriage, of which more anon. And so, a matter for wonder, he took to wife [Isabella Valois Queen Consort England (age 5)] a child not yet seven years old, rejecting the daughter and heiress of the king of Aragon, though very fair and of marriageable years1, But why he chose this young child,—and though a child she was married to him at Calais with much outlay of money and show—they say was that, eager to pour forth his pent-up venom, he thought by help and favour of the king of France to destroy his enemies. Yet this in the end turned to the ruin of himself and his confederates, as will afterwards appear2.
Note 1. The actual age of Isabella of France was eight years. The marriage took place at Calais, on the Ist November, 1396. The daughter of the king of Aragon, referred to above, appears to have been Yolande, daughter of John I (age 44). She married, in 1400, Louis II (age 17), titular king of Naples and count of Provence, and thus became grandmother to Margaret of Anjou, the wife of Henry VI.
Note 2. The surrender by Richard, in 1393 and 1397, of Cherbourg and Brest, which were held in pawn of the king of Navarre and duke of Brittany, was most distasteful to the English. Men recalled the conquests of Edward III. and their speedy loss, and had come to look upon even the givitig up of towns held in pledge as a national wrong. This, added to the French marriage, gave rise to various rumours of Richard’s designs in favour of the French: among others, that Calais, too, was to be handed over to them. See the story of Richard’s quarrel, on this score, with the duke of Gloucester, as told in the Chronique de la Tratson et Mort de Richart II., ed. B. Williams (English Hist. Soc.), 1846.
In 1400 King Louis of Naples (age 22) and Yolanda Barcelona Queen Consort Naples were married at Arles. She by marriage Queen Consort Naples. She the daughter of King John I of Aragon and Yolande of Bar Queen Consort Aragon (age 35). He the son of Louis Valois Anjou I Duke Anjou and Marie Chatillon Duchess Anjou (age 55). They were first cousin once removed. He a great x 4 grandson of King Henry III of England. She a great x 4 granddaughter of King Edward "Longshanks" I of England. 
On 25 Sep 1403 [his son] Louis Valois Anjou III Duke Anjou was born to King Louis of Naples (age 25) and [his wife] Yolanda Barcelona Queen Consort Naples. Coefficient of inbreeding 4.77%.
In 1404 [his mother] Marie Chatillon Duchess Anjou (age 59) died.
On 14 Oct 1404 [his daughter] Marie Valois Anjou Queen Consort France was born to King Louis of Naples (age 27) and [his wife] Yolanda Barcelona Queen Consort Naples. Coefficient of inbreeding 4.77%.
On 16 Jan 1409 [his son] René Valois Anjou I Duke Anjou was born to King Louis of Naples (age 31) and [his wife] Yolanda Barcelona Queen Consort Naples. Coefficient of inbreeding 4.77%.
In 1412 [his daughter] Yolande Valois Anjou Duchess Brabant Duchess Brittany was born to King Louis of Naples (age 34) and [his wife] Yolanda Barcelona Queen Consort Naples at Arles. Coefficient of inbreeding 4.77%.
In 1414 [his son] Charles Valois Anjou Count Maine was born to King Louis of Naples (age 36) and [his wife] Yolanda Barcelona Queen Consort Naples. Coefficient of inbreeding 4.77%.
On 29 Apr 1417 King Louis of Naples (age 39) died. His son [his son] Louis Valois Anjou III Duke Anjou (age 13) succeeded Louis III Duke Anjou.
Kings Wessex: Great x 11 Grand Son of King Edmund "Ironside" I of England
Kings England: Great x 4 Grand Son of King Henry III of England
Kings Scotland: Great x 9 Grand Son of Malcolm III King Scotland
Kings Franks: Great x 6 Grand Son of Louis VII King Franks
Kings France: Great x 3 Grand Son of Philip "Bold" III King France
Marie Valois Anjou Queen Consort France x 1
Margaret of Anjou Queen Consort England x 1
Mary of Guise Queen Consort Scotland x 1
Louise Lorraine Queen Consort France x 1
Maximilian "The Great" Wittelsbach I Duke Bavaria I Elector Bavaria x 1
Maria Anna Wittelsbach Holy Roman Empress x 1
Marie Françoise Élisabeth of Savoy Queen Consort of Portugal x 1
Victor Amadeus King Sardinia x 1
Great x 4 Grandfather: King Louis IX of France Great Grand Son of King Henry "Curtmantle" II of England
Great x 3 Grandfather: Philip "Bold" III King France 2 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Margaret Provence Queen Consort France
Great x 2 Grandfather: Charles Valois I Count Valois 3 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandfather: James I King Aragon
Great x 3 Grandmother: Isabella Barcelona Queen Consort France
Great x 4 Grandmother: Violant Árpád Queen Consort Aragon
Great x 1 Grandfather: King Philip "Fortunate" VI of France 4 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandfather: King Charles Capet of Sicily Great Grand Son of King Henry "Curtmantle" II of England
Great x 3 Grandfather: Charles II King Naples 2 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Beatrice Provence Queen Consort Sicily
Great x 2 Grandmother: Margaret Capet Countess Valois 3 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Stephen V of Hungary
Great x 3 Grandmother: Mary of Hungary Queen Consort Naples
Great x 4 Grandmother: Elizabeth Cuman
GrandFather: King John "The Good" II of France 4 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Odo III Duke Burgundy 3 x Great Grand Son of King William "Conqueror" I of England
Great x 3 Grandfather: Hugh IV Duke Burgundy 4 x Great Grand Son of King William "Conqueror" I of England
Great x 4 Grandmother: Alice Vergy Duchess Burgundy
Great x 2 Grandfather: Robert II Duke Burgundy 5 x Great Grand Son of King William "Conqueror" I of England
Great x 4 Grandfather: Robert Capet III Count Dreux
Great x 3 Grandmother: Yolande Capet Duchess Burgundy
Great x 4 Grandmother: Aénor de Saint-Valéry
Great x 1 Grandmother: Joan "Lame" Burgundy Queen Consort France 3 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Louis "Lion" VIII King France 3 x Great Grand Son of King William "Conqueror" I of England
Great x 3 Grandfather: King Louis IX of France Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Blanche Ivrea Queen Consort France
Grand Daughter of King Henry "Curtmantle" II of England
Great x 2 Grandmother: Agnes Capet Duchess Burgundy 2 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Raymond Berenguer Provence IV Count Provence
Great x 3 Grandmother: Margaret Provence Queen Consort France
Great x 4 Grandmother: Beatrice Savoy Countess Provence
Father: Louis Valois Anjou I Duke Anjou 5 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Henry "Great" Luxemburg V Count Luxemburg III Count Namur
Great x 3 Grandfather: Henry Luxemburg VI Count Luxemburg 5 x Great Grand Son of King William "Conqueror" I of England
Great x 4 Grandmother: Margaret of Bar Countess Luxemburg and Namur 4 x Great Grand Daughter of King William "Conqueror" I of England
Great x 2 Grandfather: Henry Luxemburg VII Holy Roman Emperor 5 x Great Grand Son of King William "Conqueror" I of England
Great x 4 Grandfather: Bouchard Avesnes
Great x 3 Grandmother: Beatrice Avesnes Countess Luxemburg 4 x Great Grand Daughter of King William "Conqueror" I of England
Great x 4 Grandmother: Margaret II Countess Flanders 3 x Great Grand Daughter of King William "Conqueror" I of England
Great x 1 Grandfather: King John I of Bohemia 6 x Great Grand Son of King William "Conqueror" I of England
Great x 3 Grandfather: John I Brabant
Great x 2 Grandmother: Margaret Brabant Countess Luxemburg and Namur
GrandMother: Bonne Luxemburg Queen Consort France 7 x Great Grand Daughter of King William "Conqueror" I of England
Great x 4 Grandfather: King Wenceslaus I of Bohemia
Great x 3 Grandfather: Ottokar "Iron King" II King Bohemia
Great x 2 Grandfather: King Wenceslaus II of Bohemia and Poland
Great x 3 Grandmother: Kunigunda Rostislavna Přemyslovna
Great x 1 Grandmother: Queen Elizabeth of Bohemia
Great x 3 Grandfather: Rudolph I King Romans
Great x 2 Grandmother: Queen Judith of Bohemia and Poland
Great x 4 Grandfather: Burkhard V Count Hohenberg
Great x 3 Grandmother: Gertrude Hohenburg
Great x 4 Grandmother: Mathilda of Tubingen
King Louis of Naples 4 x Great Grand Son of King Henry III of England
Great x 4 Grandfather: Hugh Chatillon I Count Blois V Count Saint Pol
Great x 3 Grandfather: Guy Chatillon III Count Saint Pol 4 x Great Grand Son of King William "Conqueror" I of England
Great x 4 Grandmother: Mary Avesnes 3 x Great Grand Daughter of King William "Conqueror" I of England
Great x 2 Grandfather: Hugh Chatillon II Count Blois 5 x Great Grand Son of King William "Conqueror" I of England
Great x 4 Grandfather: Henry Reginar II Duke Brabant 3 x Great Grand Son of King William "Conqueror" I of England
Great x 3 Grandmother: Matilda Reginar Countess Saint Pol 4 x Great Grand Daughter of King William "Conqueror" I of England
Great x 4 Grandmother: Marie Swabia Duchess Brabant
Great x 1 Grandfather: Guy Chatillon I Count Blois 6 x Great Grand Son of King William "Conqueror" I of England
Great x 4 Grandfather: William Dampierre II Count Flanders
Great x 3 Grandfather: Guy Dampierre Count Flanders 4 x Great Grand Son of King William "Conqueror" I of England
Great x 4 Grandmother: Margaret II Countess Flanders 3 x Great Grand Daughter of King William "Conqueror" I of England
Great x 2 Grandmother: Beatrix Dampierre Countess Blois 5 x Great Grand Daughter of King William "Conqueror" I of England
Great x 4 Grandfather: Henry "Great" Luxemburg V Count Luxemburg III Count Namur
Great x 3 Grandmother: Isabelle Luxemburg Countess Flanders 5 x Great Grand Daughter of King William "Conqueror" I of England
Great x 4 Grandmother: Margaret of Bar Countess Luxemburg and Namur 4 x Great Grand Daughter of King William "Conqueror" I of England
GrandFather: Charles "Saint" Chatillon Duke Brittany 5 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandfather: King Louis IX of France Great Grand Son of King Henry "Curtmantle" II of England
Great x 3 Grandfather: Philip "Bold" III King France 2 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Margaret Provence Queen Consort France
Great x 2 Grandfather: Charles Valois I Count Valois 3 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandfather: James I King Aragon
Great x 3 Grandmother: Isabella Barcelona Queen Consort France
Great x 4 Grandmother: Violant Árpád Queen Consort Aragon
Great x 1 Grandmother: Margaret Valois 4 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 4 Grandfather: King Charles Capet of Sicily Great Grand Son of King Henry "Curtmantle" II of England
Great x 3 Grandfather: Charles II King Naples 2 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Beatrice Provence Queen Consort Sicily
Great x 2 Grandmother: Margaret Capet Countess Valois 3 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Stephen V of Hungary
Great x 3 Grandmother: Mary of Hungary Queen Consort Naples
Great x 4 Grandmother: Elizabeth Cuman
Mother: Marie Chatillon Duchess Anjou 3 x Great Grand Daughter of King Henry III of England
Great x 4 Grandfather: John "The Red" Capet I Duke Brittany 4 x Great Grand Son of King Henry I "Beauclerc" England
Great x 3 Grandfather: John Capet II Duke Brittany 5 x Great Grand Son of King William "Conqueror" I of England
Great x 4 Grandmother: Blanche "Navarre" Blois Duchess Brittany
4 x Great Grand Daughter of King William "Conqueror" I of England
Great x 2 Grandfather: Arthur Capet Duke Brittany Grand Son of King Henry III of England
Great x 4 Grandfather: King Henry III of England
Son of King John "Lackland" of England
Great x 3 Grandmother: Beatrice Plantagenet Daughter of King Henry III of England
Great x 4 Grandmother: Eleanor of Provence Queen Consort England
Great x 1 Grandfather: Guy Capet Count Penthièvre Great Grand Son of King Henry III of England
Great x 3 Grandfather: Guy IV Viscount of Limoges
Great x 2 Grandmother: Marie Limoges Duchess Brittany 6 x Great Grand Daughter of King William "Conqueror" I of England
Great x 4 Grandfather: Hugh IV Duke Burgundy 4 x Great Grand Son of King William "Conqueror" I of England
Great x 3 Grandmother: Margaret Burgundy 5 x Great Grand Daughter of King William "Conqueror" I of England
Great x 4 Grandmother: Yolande Capet Duchess Burgundy
GrandMother: Joan "Lame" Capet Countess Penthièvre 2 x Great Grand Daughter of King Henry III of England
Great x 1 Grandmother: Jeanne Avaugour Countess Penthièvre