Jerome was the son of Jerome Knapp Senior of Chieveley in Berkshire and Walthamstow in Essex (now Greater London) and his wife, Sarah, daughter of Thomas Preston of Bromley in Kent and heiress of her brother, Alderman Thomas Preston of the City.
Thomas Parsons (January 7, 1814 Chieveley, Berkshire, England – February 10, 1873 Rochester, Monroe County, New York) was an American politician from New York.