Great to hear from you.
Your grandfather Walter Robert and my grandmother Louisa Marjory b. 1889-1948 were siblings so by my calculations that makes us 2nd cousins. I also was born in 1952.
Louisa married 1911 to William Robert Dean 1877-1940, they lived in Redfern and had 8 children - one son being Walter Anzac, maybe named after your grandfather?
I dont know much about Louisa & Walters family as my grandparents died before I was born but have researched the Lanes back to 1761.
I would love to swap info with you so please email me direct firstname.lastname@example.org
Looking forward to hearing from you
Margaret Stevens (nee Dean)