I have only found this name in Kent and Sussex. It does go back to the late 1500's. My direct ancestor was Edward SYFLEET he was born in Stockbury KEN in 1808 to John and Ellen. As there are gaps in the registers for Stockbury I haven't been able to trace the direct line beyond that. As the name is so rare I am keeping a record of every sighting I have. If anyone knows more about the name and family please contact me.