How did the frog of the violin bow acquire its name?

Question

How did the frog (the bottom part of the bow that is nearest to the hand) of the violin bow get its name?

Answer 1

the old pesents of the Middle ages used to hold it like they held frogs

Answer 2

This term probably comes from the French or Italian word for a small fork. A frog is traditionally a thing used to hold or fasten something. A violin frog holds the horse hair on one end of the bow and is fastened to the stick with a screw attachment that allows the hair to be tightened and loosened.