en_tn/jhn/21/02.md

with Thomas called Didymus

You can translate this in an active form. Alternate translation: "with Thomas whom we called Didymus" (See: rc://en/ta/man/translate/figs-activepassive)

Didymus

This is a male name that means "twin." See how this name is translated in John 11:15. (See: rc://en/ta/man/translate/translate-names)