Ἰακώβ, ὁ indecl. (Heb. יַעֲקֹב),
Jacob;
__1. The patriarch: Mat.1:2 8:11, Jhn.4:5-6, Act.7:8, al; as in Heb. (cf. Num.23:7, Isa.41:8, Sir.23:12, al.), of his descendants, Rom.11:26 (LXX).
__2. The father-in-law of Mary: Mat.1:15-16 (on the form as distinct from that of the next word, see Deiss., BS, 3161)
(From Abbott-Smith. LSJ has no entry)