Cubbin Family Australia

My paternal grandfather, Albert Cubbin, and my grandmother, Beatrice, emigrated to Australia some time after the first world war. They had four children: Robert (Ernest), Clarry, Jean and Vera. There are many of us here in Australia albeit somewhat dispersed around the country. I know my father went back to Liverpool and met many of his relatives and later travelled to the Isle of Man to research the family origins. That's all I have at the moment.