John Lucas from Leominster UK to Australia Abt 1880

John Lucas came to Australia abt 1880, he married Sarah Gregor in Sydney NSW in 1881. They had five children "ANNIE, LILY, OLIVE(MAY),
WILLIAM, (who died as a child)and JOHN(known as JACK)who was killed in 1918 in France in WW1. I am looking for any descendance.