Probably a shortened form of Mattathias; Matthat (i.e. Mattithjah), the name of two Israelites -- Mathat.
see GREEK Mattathias
STRONGS NT 3158: ΜατθάτΜατθάτ (Tdf. Μαθθάθ (see references s. v: Ματθαῖος)), ὁ (מַתָּת, from נָתַן), Matthat;
1. one of Christ's ancestors, the son of Levi: Luke 3:24.
2. one of the ancestors of the man just spoken of: Luke 3:29 (here Tr WH Μαθθάτ (see as above)).