Complex sentence: On April 27,1916, he married Anita Ten Eyck O'Keeffe, sister of the artist Georgia O'Keeffe They had one daughter, Eleanor "Cookie" Young who went on to become one of the much-publicized "Glamour Debutantes" of the Depression era.
Split into simpler sentences: On April 27,1916, he married Anita Ten Eyck O'Keeffe, sister of the artist Georgia O'Keeffe They had one daughter, Eleanor "Cookie" Young. Eleanor was one of the much-publicized "Glamour Debutantes" of the Depression era.