I’m sorry Aghadowey, I should have added more info that I already had. I have birth extracts for all apart from William and Annie. The district is Limavady but they all came from Doaghs, Magilligan. I have seen the 1901 census and see William and Annie were working in other houses when the census was taken, both aged 16 which also made me wonder if they were twins? I know my William married Eliza McCallion in 1905 and he then moved to Kiltest Ringsend, not far from Magilligan. Annie went on to marry a James Douglas in 1908 and they lived in Ballymoney. I was told the story of how William had trouble when he reach pension age as he couldn’t prove it because he had no documents, I was told he had been born in USA. I assumed for some reason his parents hadn’t registered him here or in the states. If the American info is wrong then I should still be able to find both him and his sister Annie born somewhere but I can’t. Neil his father was a cattle dealer and died in Magilligan area in 1910. I know of the name variations as I too have come across Deighan, Deehan, Deehanand even Deatha would you believe. I’m grateful for any help.