In 1282 [his father] Denis I King Portugal (age 20) and [his mother] Elisabeth Barcelona Queen Consort Portugal (age 11) were married. She by marriage Queen Consort Portugal. She the daughter of [his grandfather] Peter III King Aragon (age 42) and [his grandmother] Constance Hohenstaufen Queen Consort Aragon (age 33). He the son of [his grandfather] Alfonso III King Portugal and [his grandmother] Beatrice Queen Consort Portugal (age 40). They were half third cousin once removed. He a great x 2 grandson of King Henry "Curtmantle" II of England.

On 08 Feb 1291 Alfonso "Brave" IV King Portugal was born to Denis I King Portugal (age 29) and Elisabeth Barcelona Queen Consort Portugal (age 20). He a great x 3 grandson of King Henry "Curtmantle" II of England.

On 12 Sep 1309 Alfonso "Brave" IV King Portugal (age 18) and Beatrice Ivrea Queen Consort Portugal (age 16) were married. She the daughter of Sancho IV King Castile IV King Leon and Maria Molina Queen Consort Castile Queen Consort Leon. He the son of Denis I King Portugal (age 47) and Elisabeth Barcelona Queen Consort Portugal (age 38). They were half first cousin once removed. He a great x 3 grandson of King Henry "Curtmantle" II of England. She a great x 4 granddaughter of King Henry "Curtmantle" II of England.

In 1310 John Capet III Duke Brittany (age 23) and [his sister-in-law] Isabella Ivrea Queen Consort Aragon (age 27) were married. She by marriage Duchess Brittany 1221 Dreux. She the daughter of Sancho IV King Castile IV King Leon and Maria Molina Queen Consort Castile Queen Consort Leon. He a great grandson of King Henry III of England. She a great x 4 granddaughter of King Henry "Curtmantle" II of England.

On 07 Sep 1312 [his brother-in-law] Ferdinand IV King Castile IV King Leon (age 26) died. His son [his future son-in-law] Alfonso "Avenger" XI King Castile (age 1) succeeded XI King Castile.

In 1313 [his daughter] Maria Burgundy Queen Consort Castile was born to Alfonso "Brave" IV King Portugal (age 21) and [his wife] Beatrice Ivrea Queen Consort Portugal (age 20). Coefficient of inbreeding 3.61%.

In 1315 [his son] Alfonso Burgundy was born to Alfonso "Brave" IV King Portugal (age 23) and [his wife] Beatrice Ivrea Queen Consort Portugal (age 22). Coefficient of inbreeding 3.61%.

On 12 Feb 1317 [his son] Denis Burgundy was born to Alfonso "Brave" IV King Portugal (age 26) and [his wife] Beatrice Ivrea Queen Consort Portugal (age 24). Coefficient of inbreeding 3.61%.

On 08 Apr 1320 [his son] Peter I King Portugal was born to Alfonso "Brave" IV King Portugal (age 29) and [his wife] Beatrice Ivrea Queen Consort Portugal (age 27). Coefficient of inbreeding 3.61%.

On 07 Jan 1325 [his father] Denis I King Portugal (age 63) died. His son Alfonso "Brave" IV King Portugal (age 33) succeeded IV King Portugal. [his wife] Beatrice Ivrea Queen Consort Portugal (age 32) by marriage Queen Consort Portugal.

In 1326 [his son] John Burgundy was born to Alfonso "Brave" IV King Portugal (age 34) and [his wife] Beatrice Ivrea Queen Consort Portugal (age 33). Coefficient of inbreeding 3.61%.

In 1328 [his son-in-law] Alfonso "Avenger" XI King Castile (age 16) and [his daughter] Maria Burgundy Queen Consort Castile (age 15) were married. She by marriage Queen Consort Castile. She the daughter of Alfonso "Brave" IV King Portugal (age 36) and [his wife] Beatrice Ivrea Queen Consort Portugal (age 35). He the son of [his brother-in-law] Ferdinand IV King Castile IV King Leon and [his sister] Constance Burgundy Queen Consort Castile Queen Consort Leon. They were double first cousins. He a great x 4 grandson of King Henry "Curtmantle" II of England. She a great x 4 granddaughter of King Henry "Curtmantle" II of England.

In 1328 [his sister-in-law] Isabella Ivrea Queen Consort Aragon (age 45) died.

In 1328 [his daughter] Eleanor Burgundy Queen Consort Aragon was born to Alfonso "Brave" IV King Portugal (age 36) and [his wife] Beatrice Ivrea Queen Consort Portugal (age 35). Coefficient of inbreeding 3.61%.

On 04 Jul 1336 [his mother] Elisabeth Barcelona Queen Consort Portugal (age 65) died.

On 24 Aug 1340 [his son] Peter I King Portugal (age 20) and [his daughter-in-law] Constanza Manuel Queen Consort Castile (age 24) were married. She by marriage Queen Consort Portugal. He the son of Alfonso "Brave" IV King Portugal (age 49) and [his wife] Beatrice Ivrea Queen Consort Portugal (age 47). They were second cousins. He a great x 4 grandson of King Henry "Curtmantle" II of England. She a great x 4 granddaughter of King Henry "Curtmantle" II of England.

On 15 Nov 1347 [his son-in-law] Peter IV King Aragon (age 28) and [his daughter] Eleanor Burgundy Queen Consort Aragon (age 19) were married. She by marriage Queen Consort Aragon. She the daughter of Alfonso "Brave" IV King Portugal (age 56) and [his wife] Beatrice Ivrea Queen Consort Portugal (age 54). He the son of Alfonso IV King Aragon and Teresa Enteca Queen Consort Aragon. They were second cousins. He a great x 5 grandson of King Henry "Curtmantle" II of England. She a great x 4 granddaughter of King Henry "Curtmantle" II of England.

In or before 1350 [his son] Peter I King Portugal (age 29) and [his daughter-in-law] Inês Castro (age 24) were married. She by marriage Queen Consort Portugal. There is some uncertainty as to whether they were married. He announced their marriage in 1357 after he succeeded, and after her death, thereby ensuring their children were legitimate. He the son of Alfonso "Brave" IV King Portugal (age 58) and [his wife] Beatrice Ivrea Queen Consort Portugal (age 56). He a great x 4 grandson of King Henry "Curtmantle" II of England.

On 07 Jan 1355 [his daughter-in-law] Inês Castro (age 30) was murdered on the orders of her [his son] husband's (age 34) father Alfonso "Brave" IV King Portugal (age 63) who didn't approve of their marriage, or relationship. He, Peter, subsequently captured two of the murderers and had them executed.

On 28 May 1357 Alfonso "Brave" IV King Portugal (age 66) died. His son [his son] Peter I King Portugal (age 37) succeeded I King Portugal.

In 1359 [his former wife] Beatrice Ivrea Queen Consort Portugal (age 66) died.