Tino

Also Finnish name. Finnish name day February 14.
https://fi.wikipedia.org/wiki/Tino_(etunimi)
https://almanakka.helsinki.fi/en/name-days/name-day-search.html

The male given name Tino is a masculine form of the female given name Tina.

I've also seen this used as a nickname for Celestino.

Sometimes used for Constantine by people of Greek descent. (My uncle and I were among them, though I have long used only my full name except with my family and anyone I meet through them.)