Jacobs gives eighty-four names (applied to 120 different persons) derived from animals and plants. Leah is generally known as a word for cow, and Rachel for ewe (appropriate since both are considered matriarchs). Oreb ("raven") and Ze'ev ("wolf") were princes of the Midianites (although Ze'ev was also an appellation of Benjamin), and Caleb ("the dog") was the founder of the chief Judean tribe. Achbor ("mouse") and Shaphan ("coney") also occur. Jonah is the equivalent of "dove", Zipporah of "bird", and Deborah of "bee." Esther's Jewish name, Hadassah, means "myrtle." Citing these animal-inspired names, Robertson Smith and others have attempted to find evidence of totemism among the ancient Hebrews.