Conrad Graf
Conrad Graf( 17 November 1782 in Riedlingen, Further Austria – 18 March 1851 in Vienna) was an Austrian- German piano maker.
His pianos were used by Beethoven, Chopin, and Clara Schumann, among others.
Donald A. Nixon
Donald A. Nixon( born 1946) is a businessman.
He is the nephew of former President Richard Nixon and the son of Richard Nixon's brother, Donald Nixon and Clara Jane Lemke.
Ákos Koller
Ákos Koller( born 4 September 1974 in Baia Mare, Romania) is a Romanian- born Hungarian former football player.
His uncle, Alexandru Koller was also a footballer.
30 Miles from Nowhere
30 Miles from Nowhere is a 2018 American horror film directed by Caitlin Koller and starring Carrie Preston.
Elsa Waage
Elsa Waage is an Icelandic contralto opera singer.
She was born in Reykjavík 1959, the second child of parents Steinar Waage, orthopedic shoe maker, and Clara Grimmer Waage.
David Ji
David Longfen Ji is an American businessman who co-founded Apex Digital, an electronics manufacturer.
In 2004, he was arrested in China following a dispute with Sichuan Changhong Electric, a supplier owned by the city of Mianyang and the province of Sichuan.
Changhong accused him of defrauding them through bad checks.
Ji was taken, according to an account by his lawyer, to the senior management and told, "I decide whether you live or die."
He has been held in China without charges.
Ji's case highlighted an "implicit racism" in dealings with American businessmen.
As a U.S. citizen he was not granted the same treatment by authorities as non-ethnically Chinese businessmen sharing the same nationality.
Danny Berrios
Danny Berrios( born October 29, 1961) is an American Christian music singer- songwriter and televangelist.
Son of Puerto Rican preacher Jose Pepito Berrios and Clara Berrios.
Howard Lutter
Howard Lutter( 1889–1959) was an American musician and composer best known for creation of player piano rolls.
He was born in Newark, New Jersey, in 1889 to Hermann Lutter and Clara Uhl.
Ron Fletcher
Ron Fletcher( May 29, 1921 – December 6, 2011) was an American Pilates Master Teacher, an author and a Martha Graham dancer.
He was also a Broadway stage, network television, cabaret and International Ice Capades choreographer.
Fletcher is identified as a “ Pilates Elder ” – a “ first- generation teacher ” who studied directly under Joseph and Clara Pilates.
Originally referred to Joseph Pilates by fellow dancer, Allegra Kent, for treatment of a chronic knee injury, Fletcher was schooled in the principles of Body Contrology( the name Pilates gave to his fitness and conditioning method) by Joseph and Clara Pilates with whom he studied- in their New York City studio at 939 8th Avenue- on and off from 1948 until one year after Joseph Pilates ’ death in 1967.
Clara Dobokai
Clara Dobokai( before 1330 – after 1370) was the second wife of Nicholas Alexander, Voivode of Wallachia.

Question: Were Ákos Koller and Clara Dobokai of the same nationality?
Answer: no