I have a Aunt descended from George Adam and Marguerita Englert. Her name is (or was, l am not sure if she is deceased or not) Frona Mary Englert from Five Dock, NSW. She married my mother's brother David George Debenham at St James' Presbyterian Church, Burwood, NSW, 29th January 1944 (NSW BDM 1944/1716) Her parents are Eldrid Anton Englert and Hannah May Hutley. They married in 1920, (NSW BDM 11287/1920) Eldred A (as spelt) was born in 1894 to George A and Elizabeth Englert (NSW BDM 28090/1894) at Quirindi, NSW I have also found a death certificate (NSW BDM 26051/1939) for a George Anton Englert born to George Adam and Marguerita Englert. I would assume this is your ancestor.
David Debenham and Frona Englert had two sons, Anthony born 1950 and Mark born 1952. Mark Debenham married an Ann Tracey. Ch. Matthew B Debenham b. 1981 Elisha B Debenham b. 1984
David George Debenham died in the 1960's I remember Frona was a very keen golfer and played every day. I always remembered she was of German descent.