Hyman G. Rickover

Hyman George Rickover was a United States Navy admiral who directed the original development of naval nuclear propulsion and controlled its operations for three decades as director of Naval Reactors. In addition, he oversaw the development of the Shippingport Atomic Power Station, the worlds first commercial pressurized water reactor used for generating electricity.

Rickover was born Chaim Godalia Rickover, to Abraham Rickover and Rachel Rickover, a PolishJewish family in Makw Mazowiecki of Poland, at that time ruled by the last Russian tsar, Nicholas II. His parents later changed his name to Hyman, which, like Chaim, is derived from the Hebrew , meaning life. He did not use his middle name, Godalia , but when required to list one for the Naval Academy oath, he substituted George. The family name Rickover is derived from the village and the estate of Ryki, located within 100 kilometres of Warsaw, as is Makw Mazowiecki.

Source: Wikipedia