 The Jordan Schnitzer Museum of Art at the University of Oregon also holds a large number of works collected by Munthe and later acquired by the Museum's founder, Gertrude Bass Warner (1863-1951).In 1919, he married German-born Alexandra Ethelred von Herder (1867-1920 ).She was the widow of Frederick William Grantham (1870–1915) and was the mother of Sir Alexander Grantham (1899–1978) who was Governor of Hong Kong from 1947 to 1957.