The Queen's sister, Princess Margaret, died in February 2002.
The Queen's mother died in March.
Because her father died 50 years ago, the Queen now has no-one left from the family she grew up with.
2002 began as a sad year for the Queen but there were also happy times. Millions of people helped celebrate the Golden Jubilee.
In 2003 the Earl and Countess of Wessex added a baby daughter to the Queen's family.