Find Ancestors

I am looking for possible relatives of the late William Jones from Tregarth North wales, and later moved to Luton Bedfordshire where he could have remarried. I am his great granddaughter. His son, my grandfather William John Jones married my nan Irene winstanley from Hale nr Altrincham but was sadly killed at ringway airport when Mum was 9 yrs old. They are both buried at St Marys church tregarth along with my Great grandfathers sister Margaret who died aged 20 in 1916 and his brother Thomas who died age 20 in 1913, and there parents John william Jones of machno Villa tregarth died 1910 age 47 and My great great grandmother Jane Jones died aged 73 in 1934. I would love to hear from possible relatives as I know Mum would. I know there was a family rift when my Grandfather left Wales with his Father William who later moved to Luton (His first wife my Great Grandmother, not sure if they divorced or she died while Grandad was little boy) it could be possible for My Great Grandfather to have had other children he was born in 1885 and died in 1973 aged 88. Although I was born in 1967 I sadly never met him, neither did my mum his Granddaughter Gillian Jones who is now 59.