Ann McQuaid
Ann McQuaid( born 26 August 1951) is an Irish sprint canoer who competed in the early 1970s.
She was eliminated in the repechages of the K-1 500 m event at the 1972 Summer Olympics in Munich.
Her father is Henry Mcquaid.
Henry Duncan (Royal Navy officer, born 1786)
The Honourable Sir Henry Duncan KCH, CB (1786 – 1 November 1835) was a prominent Royal Navy officer of the early nineteenth century.
The second surviving son of the highly regarded Admiral Adam Duncan, 1st Viscount Duncan, who defeated the Dutch Navy at the Battle of Camperdown in 1797, Duncan achieved a successful career in his own right, operating with great success against French and Italian shipping and shore fortifications in the Mediterranean during the Napoleonic Wars.
For his services he was knighted and given numerous honours before dying at the young age of 49 from a sudden apoplexy in 1835.
Harry Crerar
General Henry Duncan Graham" Harry" Crerar( April 28, 1888 – April 1, 1965) was a senior officer of the Canadian Army who became the country's" leading field commander" in World War II, where he commanded the First Canadian Army.
Henry McLaren, 2nd Baron Aberconway
Henry Duncan McLaren, 2nd Baron Aberconway, CBE( 16 April 1879 – 23 May 1953) was a British politician, horticulturalist and industrialist.
He was the son of Charles McLaren, 1st Baron Aberconway and Laura Pochin.
Ronald Duncan
Ronald Frederick Henry Duncan (6 August 1914 – 3 June 1982) was an English writer, poet and playwright of German descent, now best known for his poem "The Horse" and for preparing the libretto for Benjamin Britten's opera "The Rape of Lucretia", first performed in 1946.
Adam Duncan, 1st Viscount Duncan
Adam Duncan, 1st Viscount Duncan (1 July 17314 August 1804) was a British admiral who defeated the Dutch fleet off Camperdown (north of Haarlem) on 11 October 1797.
This victory is considered one of the most significant actions in naval history.
Anu Bradford
Anu Bradford is a Henry L. Moses Distinguished Professor of Law and International Organization at the Columbia Law School.
Henry Duncan (Royal Navy officer, born 1735)
Henry Duncan( 24 November 1735 – 7 October 1814) was an officer of the Royal Navy, who saw service in the American War of Independence.
Duncan was born in Dundee, Scotland to Alexander Duncan, Town Clerk of Dundee, and Isobel Crawford.
Henry Littlejohn
Sir Henry Duncan Littlejohn( 8 May 1826 – 30 September 1914) was a Scottish surgeon, forensic scientist and public health pioneer.
He is also known as an inspiration for the literary character Sherlock Holmes.
William Henry Duncan
William Henry Duncan( 27 January 1805 – 23 May 1863), also known as Doctor Duncan, was an English doctor who worked in Liverpool as its first Medical Officer of Health.

Question: What nationality is Henry Duncan (Royal Navy Officer, Born 1786)'s father?
Answer: British