Tarleton, who received £5,000 by his father’s will on coming of age, was a Liverpool West India merchant, in partnership with his brothers Thomas and Clayton Tarleton and one Daniel Backhouse. Between 1786 and 1804 he invested in 39 Liverpool registered ships, with a total tonnage of 7,874. He was a member of the delegation sent to London in 1788 by the committee of Liverpool Africa merchants opposed to abolition of the slave trade and promoted resistance to Dolben’s bill for regulating slaving ships.
He joined the Whig Club in 1787 and was listed among opposition ‘candidates unfixed’ before the general election of 1790,
Tarleton did not stand for Seaford in 1796, but instead came forward for Liverpool in opposition to his brother and another soldier, basing his pretensions on his involvement in the commercial life of the city and declaring himself
a decided supporter of the general measures of the present administration; conceiving those measures to be the most conducive to the common good and most likely to produce a speedy, an honourable and a permanent peace.
Among the charges brought against him was one that he had failed to pay Webster £3,000 owed for the Seaford seat. (In 1794, Thomas Pelham alleged that he had queered Webster’s pitch there by not indemnifying their supporters ‘for the expense of contributing to the poor rates by which they gained the right of voting’.)
Tarleton subsequently failed in business and lived for a period in Holland. He died 19 Sept. 1841 and was buried at St. Pancras, London.
