Marsden Alexander Gibson b1875,NSW

Looking to find Marsden Alexander Gibson , b 1875 .died after 1945 as have checked the records , Marsden was married 1910, to Harriet Margaret Findlay NSW,b1883 ,d after1945,Daughter of John Findlay b Scots, Edith Eliza Holdstock b English,
Marsden & Harriet , believed theyhave two sonsborn after 1910 , Do yo know this family , I need to contact them or there children . Also see Findlay Messages
many thanksHelen G