A baptismal name for a boy
Caterius
One saint bore this name
Saints named Caterius
Questions
The name day of Caterius is November 3, the feast of Martyr Caterius of Sebaste.
The Sinaxarion archive holds 1 saints named Caterius, with their lives and icons.
Yes. Caterius is the name of a saint of the Orthodox Church, so the child will have Martyr Caterius of Sebaste as patron.