The Collaborative International Dictionary of English v.0.48:
Heritor \Her"it*or\, n. [Cf. LL. her?ator, fr. L. heres an heir.] A proprietor or landholder in a parish. [Scot.] [1913 Webster]WordNet (r) 3.0 (2006):
heritor n 1: a person who is entitled by law or by the terms of a will to inherit the estate of another [syn: heir, inheritor, heritor]