Leo Frankowski
Leo Frankowski (1943–2008) was an American writer of science fiction novels. He lived in Russia for four years with his now ex-wife and adopted teenage daughter, but at the time of his death, he had moved back to the United States.
The Adventures of Conrad Stargard · #4
UNCERTAIN VISION
For a twentieth-century man, Conrad Stargard had done a lot in thirteenth-century Poland. In just nine years, he had "discovered" universal education, aircraft, radios, steamboats, and machine guns. More important, he had prepared Poland to defeat the bloodthirsty Mongols in 1241.
But now that the Mongol hordes had arrived, something was disturbing the flow of history. Even the Time Masters who secretly watched over Conrad couldn't predict his future, because they no longer even knew their own past...