William Suida, born Wilhelm Emil Suida (April 26, 1877 – October 29, 1959) was an eminent Austrian art historian and art collector and "one of the greatest connoisseurs of Italian art." He published books and essays in multiple languages about numerous artists and schools of art. He and his heirs amassed a large private collection that in 1999 was acquired by the Blanton Museum of Art in Austin, where many paintings from the Suida-Manning Collection are on permanent display. Source: Wikipedia (en)