Arthur Marx Arthur Marx Arthur Julius Marx (July 21, 1921April 14, 2011) was an American author, a nationally ranked amateur tennis player, and son of entertainer Groucho Marx, and his first wife, Ruth Johnson. He was named after Groucho's brother Arthur "Harpo" Marx. Marx spent his early years accompanying his father around vaudeville circuits in the United States and abroad. When he was 10, the family moved to Southern California, where the Marx Brothers continued their film careers. Marx was a nationally ranked tennis player before he was 18. While he was attending the University of Southern California, he won the National
Adolph I, Duke of Cleves Adolph I, Duke of Cleves Adolph I of Cleves () (2 August 1373 – 23 September 1448) was the second Count of Cleves and the fourth Count of Mark. He was the son of Adolph III, Count of Mark, and Margaret of Jülich (and thus the brother of Margaret of Cleves). After his father's death in 1394, he became Count of Cleves. In 1397 he defeated his uncle William VII of Jülich, 1st Duke of Berg in the battle of Kleverhamm and became Lord of Ravenstein. When his brother Dietrich IX, Count of Mark died in battle in 1398, he