Confirmation names question

55 year old cradle Catholic - back to Church a few years back. Come to realize that I was not confirmed - will be in the next month or so. My two favorite saints are Saint Louis Marie de Montfort and Saint Faustina. I can’t decide and have a question on each please.

What name(s) would I use for St. Louis Marie de Montfort - Louis or Marie or both? I have even seen his name with Mary instead of Marie?

And is it ok for a man to take the confirmation name Faustina?

Thanks for any direction.

One of the teenage girls in my son’s class took the name “Basil”… she could have feminized it (“Basilia”) but she chose not to, so I see no reason why you should not take “Faustina”.

Or you could take “Louis Faustina”…

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