Hello Norma,
Whilst looking at some family records I noted that a Frederica KENT who stated she was born in Memel, Prussia, and was a British Subject was working for my great great uncle Charles Auguste Arthur FOUCARD in his home at Tulse Hill, Norwood, London and is recorded in the 1881 census under this name. She was working as the family cook. I have not found any other reference to her under this spelling, but have not looked yet under KANT.