This isnt strictly speaking a baby name question, more something that might be of interest to people with a child called Tegan or Sean.
There are a couple of little stories on one of the nappy websites one with a child called Tegan, and one with a Sean.
I sent the Tegan one to a friend who has a little girl called Tegan and she reallly liked it. It isnt a name where you normally see things with that name on IYSWIM, so she was really happy about it, so i though would put the link here for anyone else who has or knows a Tegan.
Tegan
Sean