Didn't Karl Marx "sleep" with his servant?
I have found Sir Joseph Bazalgette (engineer, responsible for London Sewers, embankments, sewage works, bridges tunnels...) in 1881:
Joseph W Bazalgette, Head, M, 62, born Enfield Middx, Occ: Knight Companion of the Bath Engineer to the Metropolitan Board of Works
living with his family and servants at Arthur Road St Marys, Wimbledon, Surrey. RG11/0829/51/2
Deborah