Trying to find any info regarding Donald Rosie and Isobel Taylor. Donald Rosie b. 15 May 1737 in Flex and Isobel Taylor b. abt. 1734 in Wester.

Children I have been able to find are :
Alexander b. 2 Dec 1761 in Watten
William b. 6 Apr 1763 in Watten
Peter b. 6 Jan 1765 in Watten
William b. 19 May 1767 in Scowthell
Barbara b. 17 Sep 1769 in Achawal
Margaret b. 30 Sep 1772 in Achawal
Donald b. 18 Apr 1776 in Achawal
Isobel b. 11 Apr 1778 in Achawal
Peter b. 20 Apr 1780 in Achawal

Except for the child Alexander , I have not been able to track this family at all. If any one would have any info on this family , or have family connections , I would greatly appreciate some help.
Thanks,
Steve