<Li> J. Norman Davidson (FRS), Scottish biochemist, pioneer molecular biologist and textbook author . </Li> <Li> Jack Davidson (1875--1952), Australian rules footballer </Li> <Li> Jack Davidson (Scottish footballer) (born 1925), Scottish footballer (East Fife FC) </Li> <Li> James Dale Davidson (?--?), American founder of the National Taxpayers Union </Li>

Where does the last name davidson originate from