This may be of no real help in your search,but I'll tell you anyway.
When we married in 1950 we bought a farm at Cool, Claudy. Our next door neighbour was John Baird.(b approx 1928) He had a brother Samuel (a couple of years older) who was married to

Hood.He had a sister Lena,(who lived at home) and an older sister who lived in England.
John,s father was John Baird,who was married twice. I don't know the first wife's name. She died and he married

Brolly (RC)They had one son Graham,who lived with John and Lena. In 1950 John (senior) was dead.
John (junior) married a Girl called Beatrice Logan c 1960.Sad to tell he was killed by one of the stags on his farm.
The Bairds were Presbyterians.
Given the repitition of names John and Samuel,i think they may be connected to you.