Thomas Martin Einstein
Albert Einstein had three children, Lieserl Maric (1902–1903?), Hans Albert Einstein (1904–1973), and Eduard "Tete" Einstein (1910–1965), but only Hans Albert is known to have married and had children. Hans Albert's only biological child to survive to adulthood was Bernard Caesar Einstein (1930–2008), who was a physicist and the father of Thomas Martin Einstein.
Herbert Huffman
At Princeton, the choir became affiliated with Huffman’s alma mater, the Westminster Choir College. Physicist Albert Einstein and his wife attended rehearsals and concerts and sometimes interacted with the students. While on tour during this period, the boys traveled on a customized bus, outfitted with school desks and a piano. In 1956, Huffman stepped aside as director of the Columbus Boychoir in order to pursue business opportunities. He nevertheless remained closely associated with the organization for the remainder of his life.