His
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
The use of this pronoun in a written instrument, in referring to a person whose Christian name is designated therein by a mere initial, is not conclusive that the person referred to is a male; it may be shown by parol that the person intended is a female.
Berniaud v. Beecher, 71 Cal. 38, 11 Pac. 802.