Notes: Dublin Hibernian Journal Wed. 19 July 1780 married John Usher of Canty Esq. to Miss Hearn dau of John Hearn of Dunga rvan Esq. Unsourced entry in the IGI and LDS Ancestral File . At least this is his residence as stated by Rosemary Coleby, Linzi Meryl , and others. Several patrons’s submission records indexed in the IGI ass ert his identity with Christopher Musgrave of Tourin, who m. Susannah, da u. of James Ussher by his wife Jane Donellan; but we have been unable t o verify this claim.