Heiner Friedrich was a German art dealer with galleries in Munich and Cologne which showed artists such as Andy Warhol, Cy Twombly, Donald Judd, and Dan Flavin. In 1973, Friedrich moved his galleries to New York City at 141 Wooster Street, now the site of The New York Earth Room. That year Friedrich traveled to Houston to visit the Rothko Chapel where he met Dominique de Menil's assistant Helen Winkler and was reintroduced to her daughter Philippa de Menil. Friedrich and Philippa de Menil would later both get divorces so they could marry each other in a 1979 Sufi ceremony and get a marriage license in 1982.Hoban, Phoebe. Medicis for a Moment: The Collapse of the Dia Dream. New York Magazine. November 25, 1985. Retrieved August 20, 2020.
