As this is related to my family,It's hard to understand why Thomas my 2x grandfather and his brothers Walter and Robert,changed their surnames to whitlock,as their father is Henry Whitlock,with all three working in Covent Garden market,also I have found a note saying that Thomas's mother was Mary ann whillock.and they are living in 52great wild street in 1891.
Henry 42
Mary ann 37
Thomas 16
Walter 14
Robert 12. As I am not on any genioligy sites my research is limited.thanks