Jeremiah Curtin

He and his wife, Alma Cardell Curtin, traveled extensively, collecting ethnological information, from the Modocs of the Pacific Northwest to the Buryats of Siberia.
They made several trips to Ireland, visited the Aran Islands, and, with the aid of interpreters, collected folklore in southwest Munster and other Gaelic-speaking regions. Curtin compiled one of the first accurate collections of Irish folk material, and was an important source for W. B. Yeats. Curtin is known for several collections of Irish folktales.
He also translated into English Henryk Sienkiewicz's ''Quo Vadis'' and other novels and stories by the Pole. Provided by Wikipedia