Paternal Family Tree: Ivrea
On 10th October 1465 [his father] Alfonso II King Naples [aged 16] and [his mother] Ippolita Maria Sforza [aged 19] were married at Milan. She the daughter of [his grandfather] Francesco Sforza I Duke Milan [aged 64] and [his grandmother] Bianca Maria Visconti [aged 40]. He the son of Ferdinand I King Naples [aged 42] and Isabella Clermont Queen Consort Naples.
On 26th August 1469 Ferdinand II King Naples was born to Alfonso II King Naples [aged 20] and Ippolita Maria Sforza [aged 23].
On 20th August 1484 [his mother] Ippolita Maria Sforza [aged 38] died.
In February 1489 [his brother-in-law] Gian Galeazzo Sforza 6th Duke Milan [aged 19] and [his sister] Isabella Trastámara Duchess Milan [aged 18] were married. She by marriage Duchess Milan. She the daughter of [his father] Alfonso II King Naples [aged 40] and [his mother] Ippolita Maria Sforza. He the son of [his uncle] Galeazzo Maria Sforza 5th Duke Milan and Bona of Savoy [aged 39]. They were first cousins.
On 25th January 1494 [his grandfather] Ferdinand I King Naples [aged 70] died. His son [his father] Alfonso [aged 45] succeeded II King Naples.
On 18th December 1495 [his father] Alfonso II King Naples [aged 47] died. His son Ferdinand [aged 26] succeeded II King Naples. [his aunt] Joanna Trastámara Queen Consort Naples [aged 16] by marriage Queen Consort Naples.
In 1496 Ferdinand II King Naples [aged 26] and Joanna Trastámara Queen Consort Naples [aged 16] were married. She the daughter of Ferdinand I King Naples and Joanna of Aragon Queen Consort Naples [aged 42]. He the son of Alfonso II King Naples and Ippolita Maria Sforza. They were aunt and nephew.
In October 1496 Ferdinand II King Naples [aged 27] died. His uncle Frederick [aged 44] succeeded IV King Naples.
On 27th August 1518 [his aunt] Joanna Trastámara Queen Consort Naples [aged 39] died.
Kings Wessex: Great x 15 Grand Son of King Edmund "Ironside" I of England
Kings Godwinson: Great x 14 Grand Son of King Harold II of England
Kings England: Great x 10 Grand Son of King Henry "Curtmantle" II of England
Kings Scotland: Great x 13 Grand Son of King Malcolm III of Scotland
Kings France: Great x 8 Grand Son of King Louis IX of France
Kings Duke Aquitaine: Great x 19 Grand Son of Ranulf I Duke Aquitaine
Kings Spain: Great x 10 Grand Son of Alfonso VII King Castile VII King Leon
Great x 4 Grandfather: Henry "Fratricide" II King Castile 
5 x Great Grandson of Alfonso II King Aragon
Great x 3 Grandfather: John I King Castile 3 x Great Grandson of King Louis IX of France
Great x 4 Grandmother: Juana Manuel Queen of Castile 2 x Great Granddaughter of King Louis IX of France
Great x 2 Grandfather: Ferdinand I King Aragon 4 x Great Grandson of King Louis IX of France
Great x 4 Grandfather: Peter IV King Aragon 
3 x Great Grandson of King Louis VIII of France
Great x 3 Grandmother: Eleanor Barcelona Queen Consort Castile 4 x Great Granddaughter of King Louis VIII of France
Great x 4 Grandmother: Eleanor of Sicily Queen Consort Aragon 3 x Great Granddaughter of King Louis VIII of France
Great x 1 Grandfather: Alfonso V King Aragon 5 x Great Grandson of King Louis IX of France
Great x 4 Grandfather: Alfonso "Avenger" XI King Castile 4 x Great Grandson of Alfonso II King Aragon
Great x 3 Grandfather: Sancho Alfonso Ivrea 5 x Great Grandson of Alfonso II King Aragon
Great x 4 Grandmother: Eleanor Guzman
Great x 2 Grandmother: Eleanor of Alberquerque Queen Consort Aragon 6 x Great Granddaughter of Alfonso II King Aragon
Great x 4 Grandfather: Peter I King Portugal 
4 x Great Grandson of King Henry "Curtmantle" II of England
Great x 3 Grandmother: Beatrice Burgundy 5 x Great Granddaughter of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Inês Castro
Grandfather: Ferdinand I King Naples 6 x Great Grandson of King Louis IX of France
Great x 1 Grandmother: Giralda Carlino
father: Alfonso II King Naples 7 x Great Grandson of King Louis IX of France
Great x 1 Grandfather: Bartholomew "Tristan" Clermont
Grandmother: Isabella Clermont Queen Consort Naples
Great x 2 Grandfather: Raimondo Balzo Orsini
Great x 1 Grandmother: Catherine Balzo Orsini
Ferdinand II King Naples 8 x Great Grandson of King Louis IX of France
Great x 1 Grandfather: Muzio Attendolo Sforza
Grandfather: Francesco Sforza I Duke Milan
mother: Ippolita Maria Sforza 20 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 4 Grandfather: Stephano Visconti
Great x 3 Grandfather: Galeazzo II Visconti
Great x 4 Grandmother: Valentina Doria
Great x 2 Grandfather: Gian Galeazzo Visconti 1st Duke Milan 17 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 4 Grandfather: Aymon "Peaceful" Savoy Count Savoy 15 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 3 Grandmother: Bianca Savoy 16 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 4 Grandmother: Yolande Palaeologina Countess Savoy
Great x 1 Grandfather: Filipo Maria Visconti 18 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 4 Grandfather: Stephano Visconti
Great x 3 Grandfather: Bernabò Visconti
Great x 4 Grandmother: Valentina Doria
Great x 2 Grandmother: Caterina Visconti Duke Milan
Great x 4 Grandfather: Mastino II della Scala
Great x 3 Grandmother: Beatrice Regina della Scala
Great x 4 Grandmother: Taddea da Carrara
Grandmother: Bianca Maria Visconti 19 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor