Complex sentence: After being widowed in 1989 Prince Dimitri married secondly to Dorrit Reventlow (born 1942) at Kostroma on July 28 1993 in what was the first marriage of a Romanov in Russia since the fall of the dynasty.
Split into simpler sentences: After being widowed in 1989, Prince Dimitri married Dorrit Reventlow (born 1942) in Kostroma on 28 July 1993. His second marriage was the first time a Romanov had been married in Russia since the fall of the dynasty.