My mom is named Teresine, and this being the names board I would like to share a bit of information. Teresine is a family name which can be traced in my family all the way back to the 1600s, the oldest female daughter is the one who recieves the name, my sister is also named Teresine (although it is obvious she might not carry on this tradition, because people used to make fun of her and call her "kerosene"). Our family has preserved a Bible that is 400 years old and contains the history of many of our ancestors written in the note pages, including the Teresines of the 1600s. It is clear that this name is like the names Josephine and Christine, it looks like simply like a combination of Teresa and the ending -ine. Teresa + ine = Teresine.