John Grunwell Mitchell
John G. Mitchell
In 1881 he was living in Fulbourn, the census doesn't give the exact address, just listing it as Church Street. However it is between "The Hall" and William Knights house on Church Street, and then "The Harrow" and then Apthorpe Street (which misses out a lot of places). Other evidence suggests it might be 1 High Street, but it's still circumstantial (the High Street used to be called Church Street).
The 1881 census says that John G. Mitchell was 42, a Merchant, born in Wimblington, Cambridgeshire (near March). He was living with his wife Ellen (44), sons John J.J. and Alfred H., and daughters Eleanor M. A., and Eliza K.. Also in the house were three servants, a governess, a cook, and a housemaid.