8. John SCOTT
According to his death certificate he was a master mason with parents of Thomas Scott and Janet Hamilton.
John Scott and Sarah Lochead's childrens names also support him having parents of Thomas and Janet. His childrens names are:
1st Margaret - Sarah's mother's name
2nd Thomas - John's father's name
3rd Margaret - Sarah's mother's name again
4th Janet - John's mother's name
5th Matthew - Sarah's father's name