Richard H. Lyon
Richard H. Lyon( August 24, 1929 – January 21, 2019) was an American acoustical engineer.
John Dalberg-Acton, 1st Baron Acton
John Emerich Edward Dalberg- Acton, 1st Baron Acton, 13th Marquess of Groppoli,( 10 January 1834 – 19 June 1902), was an English Catholic historian, politician, and writer.
He was the only son of Sir Ferdinand Dalberg- Acton, 7th Baronet, and a grandson of the Neapolitan admiral and prime minister Sir John Acton, 6th Baronet.
Between 1837 and 1869 he was known as Sir John Dalberg- Acton, 8th Baronet.
He is perhaps best known for the remark," Power tends to corrupt, and absolute power corrupts absolutely.
Great men are almost always bad men ...", which he made in a letter to an Anglican bishop.
John Lyon-Dalberg-Acton, 5th Baron Acton
John Charles Harold Ferdinand Lyon- Dalberg- Acton, 5th Baron Acton( born 19 August 1966) is a British author and peer.
Richard Lyon-Dalberg-Acton, 2nd Baron Acton
Richard Maximilian Lyon- Dalberg- Acton, 2nd Baron Acton,( 7 August 1870 – 16 June 1924) was a British peer and diplomat, ultimately Britain's first Ambassador to Finland in 1919 – 20.
Richard Lyon-Dalberg-Acton, 4th Baron Acton
Richard Gerald Lyon- Dalberg- Acton, 4th Baron Acton, Baron Acton of Bridgnorth( 30 July 1941 – 10 October 2010) was a British Labour Party politician and aristocrat.
Archibald J. McLean
Archibald James" Archie" McLean( September 25, 1860 – October 13, 1933) was a cattleman and politician from Ontario, Canada.
He was one of the Big Four who helped found the Calgary Stampede in 1912.
John Lyon-Dalberg-Acton, 3rd Baron Acton
John Emerich Henry Lyon- Dalberg- Acton, 3rd Baron Acton( born Dalberg- Acton; 15 December 1907 – 23 January 1989), was a British peer and soldier.
Edward Acton (academic)
Professor Edward David Joseph Lyon- Dalberg- Acton FRHistS( born 4 February 1949) is a British academic and former Vice- Chancellor of the University of East Anglia.
His title from birth is The Honourable but is never referred as such professionally or on the University website.
Born in Zimbabwe, Edward Acton is the 4th son of John Lyon- Dalberg- Acton, 3rd Baron Acton and great- grandson of the historian John Dalberg- Acton, 1st Baron Acton.
He was educated at St George's College, Harare, the University of York( BA) and at St Edmund's College, Cambridge( PhD).
He worked at the Bank of England, and then held academic posts at Liverpool and Manchester, before becoming Professor of Modern European History at the University of East Anglia in 1991.
He was appointed Dean of the School of History at UEA in 1999, and served as Pro-Vice- Chancellor( Academic) from 2004 until 2009, when he was appointed Vice- Chancellor.
He is a member of the Athenaeum Club.
He is an Honorary Fellow of St Edmund's College, Cambridge.
Archibald McLean (Baptist)
Archibald McLean( 1733 –1812) was a Scotch Baptist minister.
Sir Walter Acton, 2nd Baronet
Sir Walter Acton, 2nd Baronet( c. 1621 – 1665) was an English landowner and politician who sat in the House of Commons in 1660.

Question: Are Richard Lyon-Dalberg-Acton, 2Nd Baron Acton and Archibald J. Mclean from the same country?
Answer: no