Why are there so many people with the surnames West and North, but there are so few people with the surnames East and South?
There has to be a reason.
West is a common surname.
Eastwood, Eastman, etc
USA was settled from east to west. If there were two guys named "Billy" the one who came first was just Billy, but the other needed an epithet to prevent misunderstanding. His house was often in west or north due to above so he would just be "Billy from the west" etc.