Thomerson (English) comes from English Sơn, from Middle English sone, from Old English sōna, from Proto-West Germanic sān(ō), from Proto-Germanic sēna, from Proto-Germanic *sa, from Proto-Austronesian *əsa, from Proto-Oceanic *isa.
Ancestry of “Thomerson”, step by step
Thomerson traces back through two separate lines of ancestry.