(2004 - 6 July 2009) (his death)

In September 2004, McNamara wed Diana Masieri Byfield, an Italian-born widow who had lived in the United States for more than 40 years. It was her second marriage. She was married for more than three decades to Ernest Byfield, a former OSS officer and Chicago hotel heir whose mother, Gladys Tartiere, leased her 400 acres (1.6 km2), Glen Ora estate in Middleburg, Virginia to John F. Kennedy during his presidency.