John Marshall Jones
John Marshall Jones( born August 17, 1962) is an American actor.
Albert J. Beveridge
Albert Jeremiah Beveridge( October 6, 1862 – April 27, 1927) was an American historian and US senator from Indiana.
He was an intellectual leader of the Progressive Era and a biographer of Chief Justice John Marshall and President Abraham Lincoln.
Adelard of Ghent
Adelard of Ghent was an 11th- century biographer of Saint Dunstan.
John Bay
John Marshall Bay (November 30, 1928 – November 7, 1982) was an American actor and playwright.
John Marshall (bowls)
John Marshall is a Scottish international lawn bowler.
John Marshall (biographer)
John Marshall( c. 1784- 1837) was an officer in the British Royal Navy who became a biographer of British naval officers.
Blas Gallego
Blas Gallego( born 1941 in Barcelona) is a Spanish artist, painter and illustrator with a trajectory spanning six decades.
He has created and drawn comic books and strips, book covers, film posters, role- playing game cards, and portraits, among other formats, for publishers in tens of countries.
Gallego is internationally known for his specialization in erotic art.
Heinrich Döring
Heinrich Doring, born Michael Johann Heinrich Döring( 8 May 1789, Danzig/ Gdańsk – 14 December 1862, Jena) was a German writer, theologian and mineralogist.
He became known mainly as a biographer of the German classical writers, and especially the first biographer of Goethe.
James S. Harlan
James S. Harlan (November 24, 1861 – September 20, 1927) was an American lawyer and commerce specialist, son of U.S. Supreme Court Justice John Marshall Harlan and uncle of Justice John Marshall Harlan II.
Marshall Nicholson
John Marshall Nicholson is a Hong Kong investment banker.

Question: Are Blas Gallego and John Marshall (Biographer) of the same nationality?
Answer: no