Complex sentence: In February 1919, Charles Bernard married Vivian O'Connor (1901--1991), and they remained married until his death, on 7 October 1979, in a Beaverton-area hospital.
Split into simpler sentences: In February 1919, Charles Bernard married Vivian O'Connor (1901--1991), and they remained married until his death. Bernard died on October 7,1979, in a Beaverton-area hospital.