Hankin

A Medieval nickname for names in the "John" family, including Hann, Iohannes, and Johan, Hankin is a rare choice these days and has never appeared in the US stats. Nevertheless, it has an almost surname-y sound to it, and could perhaps fit in with the likes of Franklin, Austin, Quinn, Ronin, Kelvin, Finley, Anakin, and, of course, Hank itself.

Pronounced HAN-kin.