Wow Im impressed with your dilligence you are truelly appreciated. Just had a thought , yes it does happen but not as often as I would like . Would it be possible to trace back using the trades these Corkill men had , After the Boar war J Corkill and Son were involved in the supply of Dipton Limestone for a troopers memorial in Invercargill . Some Corkills were Farmers other Blacksmiths and Some were stone masons , Is there any way to see if there was a connection