Letter: Family search

I am looking for any information about my grandfather's brother and his family. 

John Henry (Jack) Rogers was born at The Lodge, Hodnet, Shropshire on 10 September 1887 and emigrated to Australia before WW1. 

He died in Hastings hospital in Port Macquarie on 6 May 1951. Jack married Mary Elizabeth Morgan born 1887 but I have no other details about her, I don't think they married in the UK. 

They had four children, John H G Rogers born 1915, Iris C R Rogers born 1918, Daisy born 1922 and another child who died young but I have no details for him/her.

I think I have found an entry on the electoral rolls for 1930 showing Jack and his wife living at Rolland's Plains, Cowper, Port Macquarie.

Realistically I realise I am probably looking for Jack's grandchildren now, but I would be grateful for any information at all. Please email coates193@outlook.com

Susan Coates 

Daughter of Thomas Rogers, eldest brother of Jack