Who are the oldest and youngest married couples?

The oldest married couple, as of recent records, is Karam and Kartari Chand, who were married for over 90 years. The youngest married couple can vary widely due to legal and cultural differences, but in many countries, child marriages still occur, with some cases involving individuals as young as 12 or 13. However, it's essential to note that these situations often raise significant ethical and legal concerns.