The Lutge Family in Australia

As this chart shows, my relationship to Godfrey Frederick Callaghan is distant and by marriage. He's the great nephew of the wife of my great-granduncle, Patrick (Paddy) Lutge.  So why am I remembering Godfrey for Anzac Day 2022? He was "lost" to the Callaghan family until a few months ago when I was contacted by Lynette, the wife of Godfrey's first cousin once removed.  Another family history enthusiast, Lynette had found the image below amongst the glass photonegative in the William Joseph Macpherson Collection at the State Library of New South Wales.  Fifth from the left is my great-uncle, Paddy, with his future wife, Jessie (Theresa) Samora, to his left and brother, Denis (Dinny) Lutge, to his right.  Theresa is sitting next to her sister, Emily Samora. Her brother, Francis Samora, is on the extreme left. Between Emily and Francis is Thomas Callaghan, Emily's future husband.  Godfrey Callaghan is the grandson of Emily and Thomas. His mother, Gladys Muriel Cal