Hackney

Hackney was a place in England Jo Jones was said to stay after her separation from Dr. Clifford Jones. She lived there in a small, two-bedroom house. She had to hold down two jobs to keep herself and her teenaged son Matthew afloat. (EDA: Genocide)
 * Though Hackney's location is never specified, it's assumed to be the borough of London. Benton is positively said to be in London, and Jo isn't described as having made a long journey to see him.