Grant Campbell (politician)
James Alistair Grant Campbell QC, LL.B, UE( 26 August 1922 – 12 March 2008) was a Progressive Conservative party member of the House of Commons of Canada.
He was born in Cornwall, Ontario and became a barrister and lawyer by career.
After an unsuccessful attempt to gain a House of Commons seat at the Stormont riding in the 1957 federal election, he won the riding against incumbent Albert Lavigne in the 1958 election.
After his only term, the 24th Canadian Parliament, he was defeated by Liberal candidate Lucien Lamoureux in the 1962 election.
Campbell campaigned in one further election in Stormont during the 1972 election but was again unsuccessful.
Campbell died in Lancaster, Ontario aged 85.
George Clark (cricketer)
George Clark was a New Zealand cricketer.
He played eight first- class matches for Otago between 1872 and 1880.
George Ramsey Clark
George R. Clark was a rear admiral in the United States Navy.
George R. Clark served in various capacities as an instructor, navigator, line officer, station commandant, and retired as Judge Advocate General of the Navy in the late 19th and early 20th centuries.
George T. Clark
George T. Clark( February 24, 1837 – November 6, 1888) was an American banker and politician.
Grant Campbell (musician)
Grant Campbell is a Scottish singer- songwriter, born in Glasgow in 1979.
He began playing in various bands when he was 16 and went on to pursue a solo career in his early twenties.
William George Clark
William George Clark( March 1821 – 6 November 1878) was an English classical and Shakespearean scholar.
Grant Hanley
Grant Campbell Hanley( born 20 November 1991) is a Scottish professional footballer who plays as a defender for club Norwich City and the Scotland national team.
He has previously played for Blackburn Rovers and Newcastle United.
George Clark Southworth
George Clark Southworth( August 24, 1890 – July 6, 1972), who published as G. C. Southworth, was a prominent American radio engineer best known for his role in the development of waveguides in the early 1930s.
George Clark (New Orleans)
George Clark was the 31st mayor of New Orleans( March 20, 1866 – May 11, 1866).
David G. Campbell
David Grant Campbell( born December 6, 1952) is a Senior United States District Judge of the United States District Court for the District of Arizona.

Question: Did George Clark Southworth and Grant Campbell (Politician) share the same nationality?
Answer: no