Coyle

Hi I am a Coyle my dad family all come from ireland dad was born in pluck in the district of Letterkenny 12/12/32 Daniel Alphonsus Coyle nickname phonsie, he has 12 siblings. There father Daniel Coyle was born in Glasgow 4/6/1902 his parent only lived there a year and came from Letterkenny and moved back he had siblings James born 1899 and Mary Cassie 1900, his parents were James Coyle and Catherine mcgeehan, Catherine birth year is 1879 the family moved back and forth from Scotland to Ireland, my grandfather Daniel married Margaret Neely on the 14/5/1925 in Drumoghill, Raymoghy, her date of birth 27/10/1907 and was born in Raymoghy, Manorcunningham and died in 1945 after childbirth. I can not find anything on my grandfather or great grandfather or my dad. I know my great grandparents may have not been married as have checke with registrar in Scotland were it was said they were married on my grandfathers birth certificate and can not be found. Any help would be great thank you