In between obtaining his MA (1583) and his BTh (1597), he travelled overseas and got married, before returning to north Wales as the chaplain to Sir Richard Bulkeley, a prominent landowner from near Beaumaris, Anglesey.
He then obtained various parish positions on Anglesey, in Rhoscolyn, Trefdraeth and Llanfachraeth, also becoming a canon and prebendary of Bangor Cathedral.
[1] In addition to his parish work, Perry was a skilled linguist; he was highly regarded by the lexicographer John Davies.
He was said by Davies to have worked on the compilation of a Welsh language dictionary, although his sole publication was a book on rhetoric Egluryn ffraethineb ("The elucidator of eloquence", 1595).
It was the first book of its kind in Welsh, and drew upon the works of contemporary writers in English.