Answer the question at the end by quoting:

Paul Vaughn Butterfield (December 17, 1942 - May 4, 1987) was an American blues harmonica player and singer. After early training as a classical flautist, he developed an interest in blues harmonica. He explored the blues scene in his native Chicago, where he met Muddy Waters and other blues greats, who provided encouragement and opportunities for him to join in jam sessions. He soon began performing with fellow blues enthusiasts Nick Gravenites and Elvin Bishop.
Butterfield was born in Chicago and raised in the city's Hyde Park neighborhood. The son of a lawyer and a painter, he attended the University of Chicago Laboratory Schools, a private school associated with the University of Chicago. Exposed to music at an early age, he studied classical flute with Walfrid Kujala, of the Chicago Symphony Orchestra. Butterfield was also athletic and was offered a track scholarship to Brown University. However, a knee injury and a growing interest in blues music sent him in a different direction. He met guitarist and singer songwriter Nick Gravenites, who shared an interest in authentic blues music. By the late 1950s, they were visiting blues clubs in Chicago, where musicians such as Muddy Waters, Howlin' Wolf, Little Walter, and Otis Rush, encouraged them and occasionally let them sit in on jam sessions. The pair were soon performing as Nick and Paul in college-area coffee houses.  In the early 1960s, Butterfield met aspiring blues guitarist Elvin Bishop. Bishop recalled:  He [Butterfield] was playing more guitar than harp when I first met him. But in about six months he became serious about the harp, and he seemed to get about as good as he got in that six months. He was just a natural genius. This was in 1960 or 1961. By this time Butter had been hanging out in the ghetto for a couple of years, and he was part of the scene and getting accepted.  Eventually, Butterfield, on vocals and harmoica, and Bishop, accompanying him on guitar, were offered a regular gig at Big John's, a folk club in the Old Town district on Chicago's North Side. With this booking, they persuaded bassist Jerome Arnold and drummer Sam Lay (both from Howlin' Wolf's touring band) to form a group with them in 1963. Their engagement at the club was highly successful and brought the group to the attention of record producer Paul A. Rothchild.

Are there any other interesting aspects about this article?

He [Butterfield] was playing more guitar than harp when I first met him. But in about six months he became serious about the harp,

IN: William Henry "Lone Star" Dietz (August 17, 1884 - July 20, 1964) was an American football player and coach. He served as the head football coach at Washington State University (1915-1917), Purdue University (1921), Louisiana Tech University (1922-1923), University of Wyoming (1924-1926), Haskell Institute--now Haskell Indian Nations University (1929-1932), and Albright College (1937-1942). From 1933 to 1934, Dietz was the head coach of the National Football League's Boston Redskins, where he tallied a mark of 11-11-2. He was inducted into the College Football Hall of Fame as a coach in 2012.

Dietz's Indian heritage was first contested in 1916 after former neighbors who settled on the Pacific Coast heard he was posing as an Indian. In December 1918 the Federal Bureau of Investigation looked into his heritage after he fraudulently registered for the draft as a "Non-Citizen Indian" with an allotment. The Bureau found he had taken on the identity of James One Star, an Oglala man of the Pine Ridge Indian Reservation 12 years his senior who had disappeared in Cuba in 1894. Dietz also claimed he was the head of an American film company that produced propaganda films for the war.  Dietz divorced De Cora in November 1918, charging her with abandonment. It is not clear how much she knew about his true identity. She died six days after his indictment.  Dietz was tried in Spokane, Washington in June 1919 for the first offense. One Star's sister, Sallie Eaglehorse, testified after seeing him for the first time at the trial that Dietz was definitely not her brother. Still, the judge instructed the jury to determine whether Dietz "believed" he was an Indian, not whether it was true. Despite that others had witnessed his birth in the summer of 1884 or had seen him the following day, Dietz's mother Leanna claimed he was the Indian son of her husband who had been switched a week or more after she had a stillbirth. Dietz's acting ability along with his mother's fallacious testimony (to protect him from prison) resulted in a hung jury, but Dietz was immediately re-indicted. The second trial resulted in a sentence of 30 days in the Spokane County Jail after he pleaded "no contest".

Which other names were worth mentioning in the contested Heritage?

OUT:
One Star's sister, Sallie Eaglehorse,