The crossword solution for the term 'Abraham Lincoln, for one' is 'Unionist, ' which is an 8-letter word. Abraham Lincoln was the 16th President of the United States and is widely regarded as one of the greatest presidents in American history. He is best known for leading the country through the Civil War and preserving the Union. He was a strong advocate for the Union and his efforts to keep the nation together earned him the title of Unionist.