View Message

There are multiple living Thomasins here according to the birth records, who were born after 1984. I like the sound of Thomasine better: there are a handful of those around, too. But Tamsin is vastly more popular, because it's shorter and neater and girlier, not having Thomas in it.
I think that Thomasin/e/a is probably only ever going to appeal to people who like unusual historical names, and/or want to name a daughter after a Thomas.