Hey, I'm warming up to my speculation

I was wondering why a boy and girl so far down ended up in marrying in Tongue....
From the 1841 census, could this be William's family, with the parents mentioned above:
Thomas Douglas 65, shepherd b. England
Oliver Douglas 65 b. Scotland
James Douglas 35 shepherd, b. Scotland
Christiana Douglas 25
Alexr Douglas 10
Betsy Douglas 2
Oliver Douglas 2 Months
Margaret Douglas 7
William Douglas 20 shepherd, b. England...I am hoping this might be a relation not son!
Mary Mckay 20, female servant
Marion Mckay 20, female servant
Address: Clibrig, Farr Sutherland
Points to note on the 1841 census. Relationships within the household are not shown and ages were supposed to be rounded to the nearest 5 years for everyone over 15. Children under 15 are supposed to show at their actual age.
Other children showing to apart from the William we had in 1798 on IGI were:
1. JOHN DOUGLASS Birth: 26 JUL 1800 Yetholm, Roxburgh
2. THOMAS DOUGLASS Birth: 04 OCT 1802 Yetholm, Roxburgh
3. JAMES DOUGLASS Christening: 21 MAY 1805 Yetholm, Roxburgh
Monica
