sentences:  Hay, an ensign in the 1st Foot Guards, was killed at the Battle of Quatre Bras while serving as "aide-de-camp" to General Maitland.Had he lived, he would have succeeded his father as Earl of Erroll upon his death in 1819; as it was, his brother William succeeded to the title.In 1899 Murray's Magazine published some recollections by Georgiana, Dowager Lady De Ros (a daughter of the Duchess of Richmond) about Duchess of Richmond's ball that took place on 15 June 1815.