David Madel
Sir William David Madel( born 6 August 1938) is a politician in the United Kingdom.
David O'Brien (sailor)
David O'Brien( born 26 May 1965) is an Irish former yacht racer who competed in the 2000 Summer Olympics.
Charles Mesure
Charles William David Mesure( born 12 August 1970) is an English Australian actor.
David O'Brien Martin
David O'Brien Martin (April 26, 1944 – November 20, 2012) was a Republican member of the United States House of Representatives from New York.
W. David McBrayer
William David McBrayer is an American film, television producer, writer and entrepreneur.
David P. O'Brien
David P. O'Brien, is a Canadian businessman, currently as Chairman of the Board of EnCana and the Royal Bank of Canada.
William David O'Brien
William David O'Brien (August 3, 1878 – February 19, 1962) was an American prelate of the Roman Catholic Church.
He served as an auxiliary bishop of the Archdiocese of Chicago from 1934 until his death in 1962, and was named an Archbishop in 1953.
Bob Galvin
Robert William" Bob" Galvin( October 9, 1922 – October 11, 2011) was a US executive.
He was the son of the founder of Motorola, Paul Galvin, and served as the CEO of Motorola from 1959 to 1986.
William D. Thomas
William David Thomas( March 22, 1880 – May 17, 1936) was a member of the United States House of Representatives from New York.
William D. Ford
William David Ford( August 6, 1927 – August 14, 2004) was a U.S. Representative from Michigan.

Question: Are William David O'Brien and Bob Galvin of the same nationality?
Answer: yes