Ancestors I am looking for

I have finally learned the surname of my 6th great grandmother. Her name is Janet Templeton and she married Alexander Simpson about 1744 in Windham, Rockingham C., New Hampshire. She came to New Hampshire from Northern Ireland about 1735 with her brotherAdam and her future husband (and probably others.) The family had not been in Northern Ireland for a long time. They came from Scotland, I think from Ayrshire. I have found Templetons there but cannot affirm that these are the right people. How I would love to go to Scotland once again now that I know where she came from.