George William Leonard Lammas Brock Gwllb 1856 Yarmouth Norfolk Eng Assistance Required IN Tracing This Forebear of Mine

Hi all,

George William Leonard Lammas Brock is the sole brother of my great x2 grandmother, Julia Ann Lammas Brock( 1841,b. Topcroft, Norfolk-d. 1876, Melbourne,Au).
I'm interested in his whole family including parents Leonard Lammas Brock( 1813, Topcroft, Norfolk-1897,Dec 31, Sandhurst, Victoria) and Phoebe Lammas Brock nee Punchard( 1824, Redenhall, Norfolk- 1904, March, Sandhurst, Victoria). I know a little about Julia Ann but I don't know how and where she met my great x 2 grandfather on the Bendigo goldfields between 1857 and 1862 when the first of five children was born in Hotham, Melbourne. Martha Lammas left for NZ- why? Did she marry T Griffin in Bendigo before her departure? Husband 2 William Joyce produced one son and husband 3 Moffit produced 6 children. She died in Southland, NZ in 1922, She was apparently a singer. When did she sail for NZ and why? Caroline died young at 20 in Sandhurst in `1868. The youngest daughter Emma married John Mintner and had 9 children, 4 dying in infancy , dying herself in 1910 in Sandhurst. But the sole boy,can anyone tell me when he died and who his descendants are and where they live ? Cheers, Tim Murphy. Melbourne