William Preston Lane Jr.
William Preston Lane Jr. (May 12, 1892 – February 7, 1967) was the 52nd Governor of Maryland from 1947 to 1951.
William P. Acker
Major General William Preston Acker (October 22, 1930 - July 24, 2018) was a retired Major General in the United States Air Force and educator.
Albert Sidney Johnston
Albert Sidney Johnston (February 2, 1803 – April 6, 1862) served as a general in three different armies: the Texian Army, the United States Army, and the Confederate States Army.
He saw extensive combat during his 34-year military career, fighting actions in the Black Hawk War, the Texas War of Independence, the Mexican–American War, the Utah War, and the American Civil War.
Considered by Confederate States President Jefferson Davis to be the finest general officer in the Confederacy before the later emergence of Robert E. Lee, he was killed early in the Civil War at the Battle of Shiloh on April 6, 1862.
Johnston was the highest-ranking officer, Union or Confederate, killed during the entire war.
Davis believed the loss of General Johnston "was the turning point of our fate."
Johnston was unrelated to Confederate general Joseph E. Johnston.
Bill Graves
William Preston Graves( born January 9, 1953) is a former American politician who was the 43rd Governor of Kansas from 1995 until 2003.
William Preston Lauder
William Preston Lauder FRSE FRCPE FRCSE( 1788- 1 April 1850) was a Scottish physician, specialising in obstetrics.
William Preston (poet)
William Preston( 1753 – 2 February 1807) was an Irish poet, playwright and essayist.
William Preston Johnston
William Preston Johnston (January 5, 1831 – July 16, 1899) was a lawyer, scholar, poet, and Confederate soldier.
He was the son and biographer of Confederate General Albert Sidney Johnston.
He was a president of Louisiana State University and the first president of Tulane University.
Abbas Amanat
Abbas Amanat is William Graham Sumner Professor of History at Yale University.
William Preston Phelps
William Preston Phelps( 1848 – 1923), known as" the Painter of the Monadnock", was an American landscape painter.
Gregory D. Scholes
Gregory D. Scholes is William S. Tod Professor of Chemistry at Princeton University.

Question: Which country William Preston Johnston's father is from?
Answer: United States