If you seek gravestones of the Kerrowdhoo Lace family, the earliest that I found on a visit there some time ago was that of William Lace b. 1708 and died 1775, and his wife Catherine Corkhill, b. 1721 died 1804. I will not claim to have found them all, and I would guess those who spent some time with the MI's might have more. I doubt you will see a MacGillhast as the name changed to Lace in the early 1500's I believe.

Jim Smith