Benjamin Seymour Guinness

Benjamin Seymour Guinness was an Irish businessman, banker and lawyer.
Born in Dublin, Ireland, in 1868, into the "banking line" of the Guinness family, Guinness was the fourth son of Richard Seymour Guinness and a grandson of Robert Rundell Guinness, founder of the Guinness Mahon merchant bank.
He was commissioned as an officer in the Royal Navy in 1882. He retired in 1892 with the substantive rank of Lieutenant.
Based in New York, Guinness was a director of the New York [Trust Company], Lackawanna Steel Company, Kansas City Southern Railway, Seaboard [Air Line Railroad], Duquesne Light Company, and United Railroads of San Francisco. He was also a partner in Ladenburg Thalmann. Guinness was the father of Loel Guinness. In 1936 he remarried to Donna Maria Nunziante di Mignano, daughter and heiress of the Italian Duke of Mignano, of Castello Monte Mignano. His wife was awarded the titular style of Princess by King [Umberto II of Italy], decreed on 22 May 1946. The same day, his wife's new title was extended to him and he became a Prince.
Following his death in 1947, his widow and son were involved in a lengthy dispute over his estate.