My Great Great Grandfather did the same... (may be it was probably to escape debts!!) - fortunately on the 1881 and 1891 census, in Swindon, Wiltshire, some of the family were visiting or classed as Lodgers.

1871 Census, Blakeney Road, Awre

William WICKENDEN - 26, Butcher, born Glos. Rendcombe
Blanche WICKENDEN - unmarried, age 2. born Glos. Blakeney
William WICKENDEN - age 57, born Coln St Aldwins (originally the Miller at Rendcombe)
Margaret WICKENDEN - age 49, born Glos. Rendcombe

1881 Census, Swindon, Wiltshire, 5 Brundel Street

William GREEN - age 58, Railway Labourer, born Glos Coln (his mother's maiden name)
Margaret GREEN - age 56, Glos. Rendcombe
Martha WICKENDEN - Granddaughter - 5, born Glos. Ruardean

1891 Census, 26 Farnsby Street, Swindon, Wiltshire

William GREEN - age 73, Machineman - born Glos. Rendcombe
Margaret GREEN - 68, born Glos. Rendcombe
Susan GREEN - Sister, age 65, born Coln St Aldwins
John WICKENDEN - Lodger, age 41, Railway Clerk - born Rendcombe ( his Son)
William WICKENDEN - age 17, Machineman, born Glos. Blakeney (his Grandson, my Grandad)

His death certificate 17 April 1891 gives his correct name William WICKENDEN , address 26 Farnsby Street, ([i]Retired Farmer[/i])