Prince Dmitri Kantemir, the Prince of Moldavia and Imperial Chancellor to Peter the Great, lived in forced exile for 22 yrs. He became a great writer, statesman, scientist. Centuries later American Ella Kantemir makes a startling discovery: she has a sister who shares her name—and her own true identity is that of a Princess: HSH Eleonora Borisovna Kantemir. 300 yrs. of intriguing Kantemir history.