Sir Andrew TRELASKE was the son and heir of Sir Roger Trelaske.
He had a daughter:
? TRELASKE, daughter [and heir] of [Sir] Andrew Trelaske.
She may have married Hamelyn Upton, possibly about 11 Henry III (1227). The Upton genealogy states: "While it is not at all improbable that Hamelyn Upton married a Trelaske, the old pedigree-makers were in error in supposing that marriage (if such a marriage occurred) brought to the Uptons the manor of Trelaske. That property was acquired through the Mulys marriage three generations later."