Thomas Herle was a bastard son of one of the leading members of the Cornish gentry.
As a consequence of his illegitimate birth, Herle did not stand to inherit any of his father’s lands, and despite having no legitimate offspring, Sir John is not known to have made any settlement on him, unless it consisted of the two messuages and an acre of land in Tywardreath that Herle was seeking to recover in the courts between 1437 and 1439.
Perhaps the connexions that Herle thus forged among the mercantile community of the south-west were instrumental in allowing him to contract a marriage to the eventual heiress of a wealthy Exeter merchant, a match which seems to have taken place only after Sir John Herle’s death.
