Hi Dave,
I've strruggled to find a family with the names matching exactly, but the following one has distinct similarities - matching ages, birthplaces etc. - and seems a definite possibility.
The 'William' could well be the 'John W.' from the 1891 census.
Anyway, see what you think.
1901 Census
22 Beaumont Street, Leeds
James A. Kingswood - Head - md - 37 - Cart Driver and Brickworks Worker - b. Leeds
Carry (?) A. Kingswood - w. - md. - 35 - b. Bradford
William Kingswood - s. - 13 - Office Boy - b. Leeds
George Kingswood - s. - 10 - b. Leeds
Nellie Kingswood - d. - 7 - b. Leeds
Walter Kingswood - s. - 5 - b. Leeds
Samuel Hill - bdr. - unm. - 38 - Cart Driver and Brickworks Worker - b. Leeds