Was your relative a crofter? If he was you will surely know what he did and how he earned a living. But what if your relative was a Guager or a Howdywife, a Lorimer, an Orraman, a Colporteur or even a Fencible? What did they do for a living? How did they earn the money to feed themselves and/or their family?
If curiosity is getting the better of you then you had better visit the Scottish Occupations section on the sister site of Wakefield Family History Sharing, Moray Family History Sharing and have a peruse through the old occupations.
If your family are from south of the border you may find these occupations interesting too!