Hi Linda
I think I've managed to find them on the 1861 census in Brighton
RG09 598 162 18
9 Preeces Buildings, Jubilee Street, Brighton
John Luck, 46, shoemaker born Mayfield
Elizabeth Luck, 46, wife born Hailsham
elizabeth Luck, 18 Ironer born Brighton
John Luck, 15, shoemakers son, born Brighton
Sarah A Luck, daughter, scholar born Brighton
Mary A Luck, daughter, scholar born Brighton
Kerry