Bernard Gaffney (son of Charles Gaffney) and siblings

Dear Ireland XO Cavan posters,

I am researching the family of James Charles Gaffney (b.1931) son of Bernard Gaffney (married to Mary Jane Heffernan in Ballyhaise chapel in 1921.  They had 8 children).  Charles Gaffney was the father of Bernard Gaffney. 

James was married to Mary Rose Harwood in 1951 and had 6 children.  The family moved to England to work in 1951. 

Any information on the siblings of Charles, Bernard and James or suggestions on how to proceed would be much appreciated.

Howard Engers