The Scots Peerage - Founded on Wood's Edition of Sir Robert Douglas's Peerage of Scotland; Containing an Historical and Genealogical Account of the Nobility of That Kingdom #229159

As a general rule cadets of families have not been brought down further than the second generation from the parent stem. But there are cases where this has been departed from, such as when the descendants of a younger son ultimately succeeded to the title, or where it is necessary to show the ex tinction of some cadent branch.