Owen began writing poetry under the pseudonym
Glaslwyn, entering his work into local
eisteddfodau and managed to publish some pieces. His first significant work in Welsh was a translation of
Timothy Shay Arthur's novelette
Ten Nights in a Bar-Room and What I Saw There. This came out fortnightly in the Methodist journal ''Charles o'r Bala''. Owen then trained unsuccessfully for the ministry of his church, preaching from 1860. He enrolled in
Bala Theological College in 1865, but failed to complete the course. From 1867 until the end of his life, he worked as a tailor in Mold, preaching on Sundays until prevented by illness. Later his mentor,
Roger Edwards, suggested he try his hand at writing instead. Owen's first attempt at fiction was a short story,
Cymeriadau Methodistaidd (
Methodist Characters) about the election of chapel elders. Its modest success led Edwards to encourage Owen to embark on a first novel,
Y Dreflan, which described a fictionalized version of Mold. ==Mature work==