I'm trying to research my dad's family and I have reached a dead end.

My Grandfather John (Jack) McCreary and Great grandfather George McCreery both came to Canada in the early 1900's. My grandpa Jack was born in 1911 came to Canada in 1924 and passed away in 1973 in Lethbridge, Alberta, Canada. My great grandfather George McCreery passed away in 1946 in Assiniboia, Saskatchewan, Canada. His wife Mary McCreary (nee Gibson) stayed in Ireland.

My father has in his possession the judicial adminstration of the estate of George McCreary from December 1946, which lists the children of George and Mary - and three of the addresses are in Portadown, County Armagh, Ireland.

Wife: Mary McCreary and son James McCreary was listed at:
22 Severn Street,
Off Dee Street
Belfast Ireland

Richard McCreary (McCreery)
22 Castle Ave.
Portadown,
County Armagh, Ireland

George McCreary (McCreery)
No. 8 Charles Street
Portadown,
County Armagh, Ireland

Frank McCreary (McCreery)
No. 2 Redmanville Raltylum
Portadown, County Armagh, Ireland

Sarah (nee McCreary) Haakanson was at:
41 Rodbourne Road
Swindon, Wiltshire
England

Samuel McCreary was listed as:
Pte. Samuel McCreary
No. 6978948 C. Company
1st. Cheshire Regiment
B.A.O.R.

My grandfather Jack's family only kept in touch with one cousin, George Haakanson who also has not kept in contact with any other family members.

I am wondering if any children or grandchildren of my great grandfather George, and if any of them could help with tracking the genealogy of our family. McCreary could be spelled either way, my grandfather went by McCreary and my great grandfather went by McCreery