William Trail

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William Trail
William Trail.jpeg
Born(1746-06-23)23 June 1746
Montrose, Angus, Scotland
Died3 February 1831(1831-02-03) (aged 84)
Alma materUniversity of Glasgow
Known forText books
Scientific career
InstitutionsMarischal College, (University of Aberdeen)
The church at Down and Connor

Rev Dr William Trail or Trail DD FRSE MRIA LLD (23 June 1746 – 3 February 1831) was an 18th/19th century Scots-born mathematician, remembered for his mathematical text books. For the majority of his life he served church duties in Northern Ireland.


Trail was the son of Rev James Trail (d.1783). His father left Scotland in 1756 to minister in Northern Ireland and in 1765 became Bishop of Down and Connor, thereafter being known as Rt Rev Trail.[1][2] Through his grandmother Agnes Trail, he was related to the mathematician George Lewis Scott and the two were frequent correspondents.[3]

In 1759, he entered in Marischal College (Aberdeen) and in 1763 he moved to University of Glasgow where he studied under Robert Simson and graduated M.A. in 1766.[4]

In 1766 he was successful to obtain the chair of mathematics in Marischal College (in competition with John Playfair and Robert Hamilton).[5]

In 1779 he resigned the professorship, and moved to Northern Ireland as Chancellor of Down and Connor church under his father, the bishop.[6] He remained thereafter in the Church of Ireland, playing his religious duties for the following forty years.[7]

In 1783 he was in Edinburgh as one of the joint founders of the Royal Society of Edinburgh.

He retired to Bath, Somerset with his wife around 1821 and died there on 3 February 1831.


In 1770 he published Elements of Algebra for the use of Students in Universities which was his most famous opera and became a very popular book.[4]

Trail is also well known by a biography of Robert Simson published in 1812;[8] as biography it is not well-regarded, though it does give a lot of first-hand information about Simson and his geometrical studies.[9]


In 1799 he married Lady Frances Charteris (1754-1848) eldest daughter of Francis Wemyss-Charteris and granddaughter of the Duke of Gordon.[10] She was 45 years old when they married and they did not have children. She died in Bath in 1848.


  1. ^ https://www.geni.com/people/William-Traill/6000000021444745772
  2. ^ Biographical Index of Former Fellows of the Royal Society of Edinburgh 1783–2002 (PDF). The Royal Society of Edinburgh. July 2006. ISBN 0 902 198 84 X.
  3. ^ Chalmers, Alexander (1812). George Lewis Scott in Chalmer's Biography, Volume 27. Nichols, Son & Bentley. p. 272.
  4. ^ a b Tweddle, page 192
  5. ^ Gibson, page 86
  6. ^ The Gentleman's Magazine: obitury of Lady Frances Charteris Trail 1848
  7. ^ Gibson, pages 86–87
  8. ^ Tweddle, page 270
  9. ^ Gibson, page 87
  10. ^ http://thepeerage.com/p1094.htm#i10940


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