Sean O'Boyle was a teacher at St Patrick's College Armagh, N Ireland up to the late 60's/70.(now called St Patrick's Grammar School). If you go on their website they have a email address and would be worth contacting. The present Principal is a past pupil and would certainly have known him and probably has fanily contact details. I have very fond memories of myself. Lovely warm man, old school scholar as well as teacher. Good Luck
Eamonn