The Scoboryo family story, in regard to the survival of a family and in particular it's surname, is a sad one - the fine detail I have yet to discover. It begins however with a marriage in 1641.
If all of these children had survived then eight of them, being boys, would have seen to it that this unusual surname would have been around for a few more generations, but sadly this did not happen, for it was left to my ancestor, the one surviving son, to carry the name of Scoboryo into the future - and this he did successfully, but two generation later, the surname, in St Columb Major at least, was extinct.
My research continues.