Patterson
Thank you so much for your reply. As you say, it's good to know one is not alone!
I don't know if this will help you at all, but in my searches I found a reference to Pedens in Derry:
In 1796, Rev James Brown did a Church visit in the Colerain/Derry area. There were two Peden families in the same parish:
James and wife Agnus plus 6 daughters- Ellinor, Martha,Jennet,Elizabeth, Margaret and Isabella.
John and wife Jean plus 2 daughters - Agnus and Jennet.
One could assume that James and John were brothers. Of course, for their line to have carried on they would have had to have a son or two later!