
Not convinced Aghadowey that we are on the trail of the correct Isabella Morton unfortunately with the Isabella born to John and Janet (Grieve) in 1869 in Dunfermline.
kbingy, did you by chance look at the actual marriage entry for the Charles Wilkie Barclay/Isabella Morton entry on SP to confirm her parents' names?
From general searches, this looks to be a likely entry for Charles Wilkie Barclay on IGI:
CHARLES WILKIE BARCLAY Birth: 26 MAY 1869 Fossoway And Tulliebole, Kinross
Parents: DAVID BARCLAY and MARGARET WILKIE
Jumping to the 1901 census, I think this might be Charles and Isabella in Scotland (a messy transcription entry, the original image on SP should be clearer):
Charles Barclay 31, shepherd b. Kinross
Isabella Barclay 52 (age down wrong) b. Dunfermline
James Barclay 2, daughter (likely Janet and age probably also mis transcribed?)
David Barclay 5
John Barclay 3
Charle Barclay 1
Address: Little Raith Cottage, Auchterderran, Fife
Monica