Joao married Lancaster, Philippa 2 Feb 1387, , Porto, Porto, Portugal. Philippa (daughter of Lancaster, Duke of Lancaster John and Duchess of Lancaster Blanche) was born 31 Mar 1360, , Leicester, Leicestershire, England; died 19 Jul 1415, , Sacavem, Lisboa, Portugal; was buried , , Batalha, Leiria, Portugal. [Group Sheet]

1. Princess Of Portugal Branca was born 13 Jul 1388, Lisboa, , Lisboa, Portugal; died Mar 1389.
2. Prince of Portugal Affonso was born 30 Jul 1390, , Santarem, Santarem, Portugal; died 22 Nov 1400, , Lisboa, Lisboa, Portugal; was buried , , Batalha, Leirea, Portugal.
3. King Of Portugal Duarte I was born 31 Oct 1391, , Viseu, Viseu, Portugal; died 9 Sep 1438, , Thomar, Ribatejo, Portugal; was buried , Conventdebatalha, Batalha, Leiria, Portugal.
4. Prince of Portugal Pedro was born 9 Dec 1392, , Lisboa, Lisboa, Portugal; died 20 May 1449.
5. Prince of Portugal Henrique was born 4 Mar 1394, , Porto, Porto, Portugal; died , Young.
6. Princess Of Portugal Leonor was born Abt 1395, of, Santarem, Santarem, Portugal; died , Young.
7. Dchess/Burgund Isabel was born 21 Feb 1397, of, Santarem, Santarem, Portugal; died 17 Dec 1472.
8. Prince of Portugal Joao was born 13 Jan 1400, , Santarem, Santarem, Portugal.
9. Prince of Portugal Fernando was born 29 Sep 1402, , Santarem, Santarem, Portugal; died 5 Jun 1443.
10. Princess Of Portugal Joanna was born Abt 1404, of, Santarem, Santarem, Portugal; died , Young.
11. Prince of Portugal Diniz was born Abt 1406, of, Santarem, Santarem, Portugal; died , Young.