The answer to the crossword for the term PRESIDENT BEFORE MILLARD is Zachary. Zachary Taylor was the 12th President of the United States, serving from 1849 until his death in 1850. He was a career military officer in the United States Army, rising to the rank of major general. He was a hero of the Mexican-American War and was elected as president on the Whig ticket. He was the last president to own slaves while in office.