When Agnes Duncan was born about 1612, in Edinburgh, Scotland, her father, Walter Duncane, was 26 and her mother, Janet Wright or Wryght, was 25. She married John Burne on 29 June 1609, in Midlothian, Scotland. They were the parents of at least 4 sons and 4 daughters.
Scottish: from the Older Scots personal name Dunecan, itself from the traditional Irish royal name Donnchad(h), derived from donn ‘brown-haired’ + cath ‘battle’. Judging by the Scots form, the Scottish Gaelic intermediary seems to have been understood as containing ceann ‘head’, as if the whole name meant ‘brown head’; compare sense 2. In Ireland the name was Anglicized as Donagh or Donaghue. Compare Donahue .
Irish: used as an Anglicized equivalent of Gaelic Ó Duinnchinn ‘descendant of Donncheann’, a byname composed of the elements donn ‘brown-haired man’ or ‘chieftain’ + ceann ‘head’.