Paul Dmitrievich Romanovsky-Ilyinsky (January 27, 1928 – February 10, 2004) was a three-time mayor of Palm Beach, Florida, and the only child of Grand Duke Dmitri Pavlovich of Russia and his morganatic wife, Cincinnati heiress Audrey Emery[citation needed].

His father, Grand Duke Dmitri, as a direct consequence of his involvement in the murder of Grigori Rasputin in 1916, had been sent to the Persian front, which ultimately saved his life, as many of his Imperial relatives were executed by the Bolsheviks during the October Revolution[citation needed].

Any children the couple would have would be known as Romanovsky-Ilyinsky, the latter half of the surname derived from Dmitri's former property in Russia, Ilinskoe[citation needed].

Ilyinsky, who was a U.S. citizen, attended Woodberry Forest School in Virginia and the Royal Military Academy Sandhurst, England, before joining the U.S. Marine Corps.

Ilyinsky lived in Cincinnati for about 20 years, serving on the board of the company founded by his mother's family, Emery Industries, and working as an author and photographer.