My late mother's maiden name was Johncock. I have her family tree which goes back to Robert Johncock born at St. Nicholas at Wade in May 1820 and believe that other members of the family have fuller records. I would be very interested to know more about the information you have gathered. The earliest date I have seen for Johncocks in Kent is 1602 - there seem to have been quite a number of them in the Thanet area from that time. It has always been my understanding that they were a Huguenot family, which is certainly would be possible in terms of date and location. As this is a relatively unusual surname I am sure that we must all be related somehow!