He was the eldest son of Sir Henry Strangways (c.1465–1504) of Melbury Sampford, Dorset by his first wife Dorothy Arundell, a daughter of Sir John Arundell (born 1418) of Lanherne in Cornwall,[3] Sheriff of Cornwall in 1443, Vice-Admiral of Cornwall, by his second wife Catherine Chiddocke, a daughter and co-heiress of Sir John Chiddocke of Dorset and widow of William Stafford of Frome.
[4] Sir Henry Strangways survived his first wife and remarried to the widow of William Browning (or Brouning), lord of the manor of Melbury Sampford, which manor thereby became a possession and the principal seat of his descendants from his first marriage.
Surviving in Melbury Sampford Church under the south arch is his monument, a chest tomb with canopy beneath which lies a recumbent effigy of a fully armed knight with his hands together in prayer.
It was made about a century before to commemorate a member of the Brouning family but has been altered to form the monument of Sir Giles Strangways.
[1] Around the side of the top edge of the chest tomb is a brass fillet (replacing the former one) inscribed in Latin as follows:[7] Which may be translated as: ("Here lie Giles Strangeways, Knight, the son and heir of Henry Strangeways, Esquire, and of Dorothy his wife, the daughter of John Arundel, Knight; and also Johanna, the wife of the foresaid Giles, and daughter of John Mordaunt, Knight.