How far back where you looking? I live in Sneads Ferry NC onlsow co. Yupp is spelled Yopp. And there are Littleton, and Justice in the family. This is very old family. There is a historical church that was founded by this Family. And there is a Book written by a Emma Yopp Murry I beleive she is still living that she has been working on for yrs. and yrs. Very up to date. A really good reference. Iam also, related throw marriage many times in this family of Yopps have done reserch. Not much on Littleton thow.