Hi Malayastar,
I refer to your post and wonder if you know more about the William Joyce. Specifically if he had a sister Margaret Hannah Joyce and/or if you recognise the photo attached - no name but just says Great Great Grandfather - surname possibilities Gregory/Joyce/Ferris. My father had this photo but the writing on the back was my grandmothers.
My great grandfather was John Samuel Gregory and married Margaret (Maggie) Hannah Joyce 1888 age 19 in Fitzroy Victoria, Australia. I have no birth info on Margaret Hannah but her death in 1925 said she was 56. She was 31 in 1901 when my grandfather was born. Should have been born ~1869/70. Her parents were named as William & Ellen (nee Ferris??) who were married in 1867 in Hobart, Tasmania, Australia, so that fits in. In 1872 they had a son William Robert Joyce who would have been 38 in 1910.
I feel better now 
My great Grandmother Ethel May Silver
Born on the 8-Sep-1887
Parents stated as Emmanuel Silver and Louisa Silver formerly Wright
My great Grandmother Ethel May Silver
Married William Joyce on 30_April-1910
Parents stated as Emmanuel Silver and Louisa Mitchell
Thanks Tim
Sorry I'm new to this I hope enough information for you to go on.