In 1824, McDowall Grant, who does not appear to have taken any part in his family’s West Indian trading concerns, claimed that ‘I have served my King and country for above forty six years and I have been four times severely wounded’.
In 1793, he was among the aspirants to the seat for Banffshire, where a vacancy was expected and where his marriage had given him a stake. His brother, surprised by his intervention, told Henry Dundas that he had ‘adopted a line for himself without asking my advice’. He remained in the field and secured the support of the Banffshire Association of resident proprietors, formed to oppose Lord Fife’s interest, when their original choice backed down. When a vacancy arose in 1795, he solicited Dundas’s support. The minister stayed neutral, but McDowall Grant was returned.
In 1806, McDowall Grant was pressed by the ‘Talents’ to support Fife’s nephew in Banffshire, but he had already committed his vote to Grant, ‘from his feelings in consequence of Lord Fife’s extraordinary conduct towards him’.
According to the navy pay books, he died 27 June 1841.
