We have shortlisted the name Tamsin and I mentioned it to a friend this evening.. She hummed a little and said she didn't know anybody with this name but knew a couple of Tegans/Teagans. (unsure how to spell it).
I know both names begin with a T and end with N but I wouldn't have thought they were very similar as in I think of Tamsin as an old type name and Tegan as a modern name.
I asked DH tonight and he has now said that as he doesn't like the name Tegan, we shouldn't use the name Tamsin.
The thing is that was our frontrunner though.