The Ley is certainly closer to Huntley Church , so unless there are other family links that would favour The Lea then I would opt for The Ley.

( cross checking with Victoria County History - Westbury on Severn --Ley Mill on the Ley brook where it was crossed by the Huntley road was owned by Richard Young at his death in 1635, and it passed with the adjoining farms to the Probyns. Between 1805 and 1879 the Coleman family worked the mill; it apparently ceased working c. 1908, and only a ruined stone wall remained in 1969.