Here is more detailed info about both Yurovsky children and in addition about one of his grandson. It's interesting that all of them surprisingly served in the Soviet Navy (or close structures) in various places and on different positions.
Yurovsky Alexander Yakovlevich

1. Yurovsky Alexander Yakovlevich (1904 - 5.05.1986), Engineer Rear Admiral (1944). In 1923 entered in the Naval Frunze College and in 1926 graduated (was the third among the classmates in academic achievement). Started his military service on the battleship "Paris Commune". Then he successively held the post of assistant officer to the watchkeeper chief and watchkeeper chief, chief of artillery of a mine fire, a senior assistant to the gunner. In 1927-1928 he finished studies in the artillery class of special courses of improvement the command staff (Special courses of the Naval Forces of the Red Army) and during 1931-1935 studied at the Naval Voroshilov Academy. After the graduation began his engineering work in the field of development and testing of the large caliber marine artillery systems on the Bolshevik factory. Worked as a military representative and commissioner of the Office of Soviet Navy Armament and later as a deputy head of the scientific-testing marine artillery range in Leningrad. At that time participated in the development and testing of new equipment for the cruisers, destroyers and battleships. Participated in the WWII, including in July 1941 he installed marine artillery on the Moscow outskirts. From 1942 worked as a deputy chief of Ordnance Department of the Soviet Navy. In 1944 was promoted to the Engineer Rear Admiral rank. In 1952 was arrested and imprisoned in the Butyrskaya prison. In March 1953 (after Stalin's death), was freed and dismissed from the disease. Died in Leningrad in 1986.
Main military decorations: - Order of the Red Banner (*maybe the most respected Soviet military Order in it's history)
- 2 Orders of the Red Star
- Order of the Patriotic War
2. Yurovsky Evgeniy Yakovlevich (1909- ?), Lieutenant Colonel. Participated in the WWII with the Lieutenant Colonel rank. In the first War days was appointed as a Battalion Commissar and Commissar of the battery near Rzhev. After the break out of encirclement was appointed in the 14th separate Guards Mortar Battalion. After the war finished the higher courses of political personnel in Moscow and served as a political worker in the Soviet Navy.
3. Grandson, Yurovsky Vladislav Alexandrovich (1929- ....), Captain of the 1st rank, PhD and docent. Worked for a rather long time in the Naval Academy and studied the theory of operations research, made a significant contributions to the application of this theory in the Navy Forces.