A baptismal name for a boy
Tyrannus
One saint bore this name
Saints named Tyrannus
Questions
The name day of Tyrannus is August 20, the feast of Martyr Tyrannus of Thrace.
The Sinaxarion archive holds 1 saints named Tyrannus, with their lives and icons.
Yes. Tyrannus is the name of a saint of the Orthodox Church, so the child will have Martyr Tyrannus of Thrace as patron.