Catholic Church. Pope (1073-1085 : Gregory VII). The correspondence of Pope Gregory VII, 1990: CIP t.p. (Ephraim Emerton)
LC data base, 5-1-90 (hdg.: Emerton, Ephraim, 1851-1935)
Wikipedia 29 July 2020: (Ephraim Emerton (February 18, 1851 – March 3, 1935) was an American educator, author, translator, and historian prominent in his field of European medieval history. He was born in Salem, Mass. He studied at Harvard College and obtained his doctorate from the University of Leipzig in 1876. In 1877 he began teaching at Harvard, becoming a specialist in church history, serving until 1918. He was a devout Unitarian. He died at home in Cambridge, Mass.) https://en.wikipedia.org/wiki/Ephraim_Emerton