Sir married Joan Orrell in 1407 in Frodsham, Cheshire, England. Joan was born in 1386 in Sneaton, Yorkshire, England; died in 1420 in Yorkshire, England. [Group Sheet] [Family Chart]

Sir married Katherine Neville in 1423 in Raby, Durham, England. Katherine (daughter of Ralph ( 1st Earl of Westmoreland and 4th Baron of Raby) Neville and Joan (Countess of Westmorland) Beaufort) was born in 1401 in Raby Castle, Durham, England; died in Jan 1483 in Yorkshire, Durham, England. [Group Sheet] [Family Chart]

1. James Strangeways was born in 1410 in Sneaton, Yorkshire, England; died on 20 Aug 1480 in Whitby, Yorkshire, England.
2. John Mowbray was born on 12 Sep 1415 in Epworth, Lincolnshire, England; died on 6 Nov 1461.
3. Isabelle Strangeways was born in 1416 in Sneaton, Yorkshire, England; died in 1443 in Pontypool, Monmouthshire, Wales.
4. Durfort Travers Strangeways was born in 1421 in Kent, England; died in 1498 in Kent, England.
5. Thomas Strangeways was born in 1424 in Castle, Yorkshire, England; died in England.
6. Lady Joan Strangeways Baroness Willoughby was born in 1427 in Manchester, Jamaica; died on 24 Feb 1485 in London, Middlesex, England.
7. Elizabeth Strangeways was born in 1430 in Derbyshire or, Yorkshire, England; died on 27 Jul 1499 in Sedbury, Yorkshire, England.
8. Catherine Strangeways was born in 1430 in North Riding, Yorkshire, England; died in 1454 in North Riding, Yorkshire, England.
9. Jane Strangeways was born in 1431 in 1681877, Yorkshire, England; died on 23 Feb 1484.
10. Isabelle Strangeways was born in 1439 in England; died in 1447 in England.
11. Joan Strangeways was born in 1445.