The two crossword solutions for the term 'Greek Historian' are Xenophon (8 letters) and Herodotus (9 letters). Xenophon was an ancient Greek historian, soldier, mercenary, and philosopher who lived in the 4th century BC. He is known for his writings on the history of Greece, particularly his 'Anabasis', which recounts his participation in the failed expedition of Cyrus the Younger against the Persian Empire. Herodotus was an ancient Greek historian who lived in the 5th century BC. He is often referred to as the 'Father of History' due to his pioneering work in the field of historiography. He is best known for his book 'The Histories', which is a detailed account of the Greco-Persian Wars.