Arthur Howe Holdsworth (1780–1860) of Mount Galpin in the parish of Townstal and of Widecombe in the parish of Stokenham, both in Devon, was a merchant, and in 1809 was Governor of Dartmouth Castle, a position held by his father Arthur from 1760 to 1777. He was elected member of Parliament for Dartmouth in 1802, holding the seat until December 1819, when he vacated it in favour of Charles Milner Ricketts, a cousin of Lord Liverpool. He returned to the seat in 1829, but was defeated by John Seale in 1832, after the Reform Act partially disenfranchised the constituency.
Holdsworth was from a Devon mercantile and trading family and resided at Widdecombe House and Mount Galpin in Dartmouth located near Kingsbridge within the Stokenham Priory estate, owned by the Holdsworth family for many years. He served as the last Governor of Dartmouth.
Holdsworth was a well-known politician in Devonshire, his father Arthur having been a prominent shipowner, merchant and member of Parliament. The son, Arthur Howe Holdsworth Holdsworth, was an active businessman with interests in shipping and an inventor with many patents to his name, most relating to shipbuilding and boats. He was a shareholder in the Bristol and Exeter Railway and was a prime force behind Devon's expansive shipping interests.
The Holdsworth family's roots lay in Yorkshire, and a vicar ancestor moved to Devon in 1620. The vicar's son Arthur entered trade and, aided by the Champernowne family, began a lucrative trade with Newfoundland. By 1672 he was mayor of Dartmouth and an imposing figure on the local business scene. In the following two centuries the Holdsworth family came to dominate the mercantile and cultural life of Dartmouth. They were leaders in the trade with Newfoundland and with Portugal, where they owned estates. Their interests extended into trade with the Baltic, the West Indies and America.
"The family continued to prosper," according to David K. Brown in his book The Way of the Ship in the Midst of the Sea, "helped in 1725 by the award of 'The Waters of the Dart' from the Duchy of Cornwall in 1725 which entitled them to levy tolls on all goods landed between Salcombe and Torbay, a rich perquisite which lasted until 1860. The Holdsworths and their relations held most of the important posts in and around Dartmouth: Freemen, Mayors, Governor of the Castle since 1725, Rector of Stokenham and Brixham, etc. The family home was Widdicombe House, near Torcross, built in 1785 and enlarged in 1820. They also owned Brooke Hall, Dartmouth."