Hello Bruce;
I am researching my Hardie family from Ayrshire also. My family used the naming pattern. I noticed that you have alot of the same names mentioned in your posting. My great great grandfather was James Hardie who married Catherine Marshall.( I have no dates for these two). They had two sons that I know of , William Davey Hardie who Married Jane Elizabeth Buchanan in 1916. The other son is George Gemmell Hardie (still waiting for the information on this family member). William and Jane Hardie had three children James, John and Isabel . If these people are connected to you PLEASE email me at izzyhardie@hotmail.com.