Regarding
#ClaphamJunction,
#ClaphamCommon,
#ClaphamNorth and
#ClaphamSouth, early records call it “Cloppaham” and “Clopeham”. “Ham” means “homestead”. “Clopp” means “near a hill”. In medieval times, Clapham was tiny, but it grew after the plague (1665) and the great fire (1666).