The ex-husband of former first lady Jill Biden has been arrested and charged with murder in the death of his current wife at their Delaware home in December, local police said Tuesday. William Stevenson, 77, was married to Jill Biden from 1970 until their divorce in 1975. Jill Biden married former president Joe Biden in 1977. Stevenson is facing a first-degree murder charge in connection to the December 28 death of his wife, 64-year-old Linda Stevenson, according to New Castle County Police in Delaware.