Editing Duke of Hamilton (section)

===Courtesy titles===
The [[Courtesy titles in the United Kingdom|courtesy titles]] used by [[heirs apparent]] are "Marquess of Douglas and Clydesdale" (the eldest son of the duke) and "Earl of Angus" (the eldest son of a marquess of Douglas and Clydesdale). No duke has had a great-grandson in direct line to the titles, but it is likely that the latter would be styled "Lord Abernethy" (the Lordship of Abernethy and Jedburgh Forest being the most senior available title).

Before the dukes succeeded to the Marquessate of Douglas and its subsidiary titles, the heirs apparent were styled initially "[[Earl of Arran (Scotland)|Earl of Arran]]" (which had previously been used as a courtesy title by the marquesses of Hamilton) and later "Marquess of Clydesdale" (the former style then being adopted for a grandson in direct line). The heir apparent to the Earldom of Lanark (before that title merged with the dukedom) was styled "Lord Polmont".