See also German classic philologist, Wilhelm Kroll (philologist) (1869–1939).William Justin Kroll (born Guillaume Justin Kroll; November 24, 1889 – March 30, 1973) was a Luxembourgish metallurgist. He is best known for inventing the Kroll process in 1940, which is used commercially to extract metallic titanium from ore.
Mary Alfred Moes, (born Maria Catherine Moes; October 28, 1828 – December 18, 1899) was a Roman Catholic nun who was instrumental in establishing first the Sisters of St. Francis of Mary Immaculate in Joliet, Illinois, as well as the Sisters of Saint Francis of Rochester, Minnesota. She was also the founder of St. Mary's Hospital, Rochester, Minnesota, which became part of the famed Mayo Clinic. Moes had been given a vision from God of a great hospital rising out of the cornfields around Rochester–the little country town, with its one doctor. To that hospital, she had been told in her vision, would come patients from every part of the world and from every nation. And she had seen the name ‘Mayo’ respected the world over for surgical achievements.
Emil Gustav Hirsch (May 22, 1851 – January 7, 1923) was a Luxembourgish-born Jewish American biblical scholar, Reform rabbi, contributing editor to numerous articles of The Jewish Encyclopedia (1906), and founding member of the NAACP.
John (Johann) Grün, also known as Herkul Grün (1868–1912), a Luxembourger from Mondorf-les-Bains was believed to be the strongest man in the world at the end of the 19th and beginning of the 20th century.
Hugo Gernsback (; born Hugo Gernsbacher, August 16, 1884 – August 19, 1967) was an American editor and magazine publisher whose publications included the first science fiction magazine, Amazing Stories. His contributions to the genre as publisher were so significant that, along with the novelists Jules Verne and H. G. Wells, he is sometimes called "The Father of Science Fiction". In his honor, annual awards presented at the World Science Fiction Convention are named the "Hugos".Gernsback emigrated to the U.S. in 1904 and later became a citizen. He was also a significant figure in the electronics and radio industries, even starting a radio station, WRNY, and the world's first magazine about electronics and radio, Modern Electrics. Gernsback died in New York City in 1967.