Hi CaroleW,
did see the 1891 death in St George, but could not see the trail from Folkestone to London (in Census) from 1881 to 1891. His earlier children (Margaret, Thomas and Mary) all lived and died in Folkestone. The name changed, probably due to transcribers from Heron to Herring to Herron over 30 years. I guess they could all have gone back to ireland?