William McDowall III of Garthland

17th Nov 1749 - 1810


West India merchant and politician. Son of William McDowall II (c. 1719-1784) and Elizabeth Graham. His grandfather Col. William McDowall I moved to Nevis c. 1700 and became a prominent planter there, returning to Scotland in 1724 and establishing himself as a successful West India merchant, dying in 1748. His father William McDowall II was MP for Renfrewshire 1768-1774. Owner of property in Grenada and St Kitts as well as extensive lands in west-central Scotland which he bequeathed in trust to William McDowall (1770-1840, q.v. under William McDowall the younger of Castle Semple), son of his brother James.

  1. Will of William McDowall of Garthland proved 24/50/1817.


http://www.historyofparliamentonline.org/volume/1790-1820/member/mcdowall-william-1749-1810; http://www.historyofparliamentonline.org/volume/1754-1790/member/mcdowall-william-1719-84#family-relations [both accessed 27/03/2015].

  1. PROB 11/1592/456.

Further Information

died unmarried
Politician and merchant

Associated Estates (2)

The dates listed below have different categories as denoted by the letters in the brackets following each date. Here is a key to explain those letter codes:

  • SD - Association Start Date
  • SY - Association Start Year
  • EA - Earliest Known Association
  • ED - Association End Date
  • EY - Association End Year
  • LA - Latest Known Association
1817 [EA] - 1829 [LA] → Previous owner
1777 [EA] - 1777 [LA] → Mortgagee-in-Possession

Inferred from Douglas Hamilton’s ‘Scottish Trading in the Caribbean: The Rise and Fall of Houstoun & Co.’, in Ned C. Landsman (ed), Nation and Province in the First British Empire: Scotland and the Americas, 1600-1800 (Bucknell University Press, 2001): ''In July 1777, Alexander Houstoun & co. took over the ownership of the Mount Alexander estate from their debtor Alexander Wilson.'

Legacies Summary

Commercial (1)

Alexander Houstoun & Co.
West India merchant  

Cultural (1)

Glasgow University...... 
notes →

Political (1)

election →
Renfrewshire Renfrewshire
1783 - 1786
election →
Ayrshire Ayrshire
1789 - 1790
election →
Glasgow Burghs Dumbarton / Lanark / Renfrew
1790 - 1802
election →
Renfrewshire Renfrewshire
1802 - 1810

Relationships (5)

Uncle → Nephew
Grandson → Grandfather
Son → Father
Testator → Trustee
Notes →
Archibald Campbell appears in Grenada award no. 688 as trustee of William McDowall deceased: William McDowall of Garthland appears as the likely...

Addresses (1)

Castle Semple, Renfrewshire, Central Scotland, Scotland