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