Thomas married Beaufort, Margaret Aft 1421. Margaret (daughter of Beaufort, John and de Holland, Dhs/Clar Margaret) was born Abt 1409, of, Westminster, Middlesex, England. [Group Sheet]

1. Courtenay, Thomas was born 1432, Okehampton, Devonshire, England; died 3 Apr 1461, Unmarried.
2. Courtenay, Joan was born Abt 1434, Okehampton, Devonshire, England; died Bef 1528.
3. Courtenay, Henry was born Abt 1437, Topsham, Okehampton, Devonshire, England; died 17 Jan 1468/1469, Beheaded.
4. Courtenay, John was born Abt 1440, Okehampton, Devonshire, England; died 14 May 1471, Battle of, Tewkesbury; was buried , , Tewkesbury.
5. Courtenay, Elianor was born Abt 1442, Okehampton, Devonshire, England.
6. Courtenay, Elizabeth was born Abt 1444, Okehampton, Devonshire, England.
7. Courtenay, Anne was born Abt 1446, Okehampton, Devonshire, England.
8. Courtenay, Matilda was born Abt 1448, Okehampton, Devonshire, England.