I have never met a kid named after Saint Pancretius of Saint Polycarp. I guess those names are not in vogue.
In Spanish, I have heard some of the older generation have names such as “Polycarpo,” or “Ignatio.” I might name my own son either one of those. Polycarp was burned at the stake by the Romans. Ignatius was eaten by lions. A name like Augustine would also seem quite good.
Not for the sake of a “patron saint,” as it is God who watches over us, not the saints in heaven.