I did a catholic search, "Mart"

Here's a lengthy list of variants.

Martinas
Martinay
Martindale
Martindill
Martine
Martineau
Martines
Martinese
Martinett
Martinette
Martineu
Martiney
Martinez
Martini
Martinier
Martiniere
Martinius
Martinlier
Martino
Martinoli
Martins
Martinson
Martinstein

Mart
Martain
Martaindale
Martane
Martansen
Martee
Martel
Marten
Martner
Martori
Marton
Martregan
Martsh
Marttal
Marty
Martymus
Martyn
Martyr
Martz
Martzloff