Answer
Boswell inherited the title of 9th Laird of Auchinleck upon the passing of his father, Lord Alexander Boswell, in 1782. The lairdship of Auchinleck, an estate in Scotland, had been in the Boswell family for generations and was passed down through direct male lineage. As the eldest son, James Boswell automatically assumed the title and responsibilities associated with being the laird, including managing the estate and upholding the family's legacy.