Read the dictionary definition of johnson. All definitions for this word.
1. 17th President of the United States; was elected vice president and succeeded Lincoln when Lincoln was assassinated; was impeached but acquitted by one vote (1808-1875)
2. 36th President of the United States; was elected vice president and succeeded Kennedy when Kennedy was assassinated (1908-1973)
3. English writer and lexicographer (1709-1784)