A Brief Biography of Karl Marx, the Father of CommunismBy the way, Marx was the father of Marxism, not communism.
“Karl Marx (May 5, 1818–March 14, 1883), a Prussian political economist, journalist, and activist, and author of the seminal works, "The Communist Manifesto" and "Das Kapital," influenced generations of political leaders and socioeconomic thinkers. Also known as the Father of Communism...”
https://europe.unc.edu/iron-curtain/history/communism-karl-marx-to-joseph-stalin/
“...The Father of Communism, Karl Marx, a German philosopher and economist, proposed this new ideology in his Communist Manifesto, which he wrote with Friedrich Engels in 1848...”