Catherine I was the second wife of Peter the Great and Empress of Russia from 1725 until her death.
Catherine II Public domain scan of 17th-century etching print, free to use, no copyright restrictions image - Picryl description Public domain scan of 18th-century etching print, free to use, no copyright re More
Ekaterina Alexeevna - Russian Emperors and Empresses Екатерина Алексеевна - Русские Императоры и Императрицы