Euthymius
Martyrological notice
The historical Roman Martyrology commemorates Euthymius on 24 December. The Latin notice identifies the record as martyr. The source places the commemoration at Nicomediae.
Historical martyrology witness · Martyrologium Romanum (Latin historical edition)
Nicomediae sancti Euthymii Martyris, qui, in persecutione Diocletiani, cum multos ad martyrium praemisisset, et ipse, ense transfixus, eos secutus est ad coronam.