* Mary, Queen of Scots (1587): This was perhaps her most famous execution. Mary was Elizabeth's cousin and a Catholic claimant to the English throne. Elizabeth feared Mary's potential to incite rebellions and ultimately signed her death warrant.
* The Earl of Essex (1601): Robert Devereux, Earl of Essex, was a powerful nobleman and Elizabeth's favorite. He led a failed rebellion against the Queen, and she had him executed for treason.
* Anthony Babington (1586): Babington was a Catholic conspirator who plotted to assassinate Elizabeth and place Mary, Queen of Scots, on the throne. He was executed after his plot was discovered.
* Sir Walter Raleigh (1618): Though Raleigh was not executed during Elizabeth's reign, he was convicted of treason and imprisoned for 13 years under her rule. He was later executed by King James I.
* Thomas Howard, 4th Duke of Norfolk (1572): He was executed for plotting to marry Mary, Queen of Scots.
These are just some examples. Elizabeth I was known for her ruthlessness in dealing with perceived threats to her authority. It's important to note that the circumstances and motivations behind these executions are complex and require further research to fully understand.