What should my confirmation name be?

My first name is Emily. I was named after poet Emily Dickinson.

My middle name is Guinevere. I was named after Queen Guinevere (disputed existence).

My (real) last name is Lapara-Hebert. Lapara is my mother's last name, and Hebert is my father's. (My mother was 1/32 Iroquois and the girls keep the mother's last name, but my father would not allow it, so now I have two last names. Yay.)

I was thinking St. Margret of Scotland. She is a direct ancestor on my father's side of the family. I live in a town called Albany, I was born in New Orleans, established by Hungarians. St. Margret was originally from Hungary. There is a church here called St. Margret's named after my ancestor. I thought it would be a good way to honor my ancestor, the town, and the church. There are a few other saints that I admire such as Joan of Arc and Bernadette Soubirous. I also want the name to sound well with my other names even though I know nobody will actually include this name.

So should my confirmation name be St. Margret Queen of Scotland, St. Joan of Arc, or St. Bernadette Soubirous?