Final answer:
Jimmy Carter and Rosalynn Carter hold the record for being the longest-married first couple, having been married for over seven decades.
Step-by-step explanation:
The president and his wife who hold the record for the longest-married first couple are Jimmy Carter and Rosalynn Carter. They were married on July 7, 1946, which means they have been married for over seven decades. Other notable long marriages among presidents and their spouses include George H.W. Bush and Barbara Bush, but Jimmy and Rosalynn Carter surpass them in the length of their union. The Carters' marriage has outlasted those of other couples such as Ronald Reagan and Nancy Reagan, John F. Kennedy and Jacqueline Kennedy, making Jimmy and Rosalynn Carter a remarkable example of a long-lasting presidential marriage. The longest married first couple in U.S. history is Jimmy Carter and Rosalynn Carter. They have been married since July 7, 1946, making their marriage over 74 years long. They surpassed the previous record holders, George H.W. Bush and Barbara Bush, who were married for 73 years.