Complex sentence: In September 1953, he married Billie Jean Jones, the widow of country music singer Hank Williams, to whom she had been married for the two and one-half months prior to his death.
Split into simpler sentences: In September 1953, he married Billie Jean Jones. Jones was the widow of country music singer Hank Williams, to whom she had been married for the two and one-half months prior to his death.