Marriage with Lord Guildford Dudley
In May 1553, Jane married to Northumberland's son, Lord Guildford Dudley. By that time it became clear that Edward was dying from tuberculosis. The marriage of Jane and Guidford was all part of Northumberland's masterplan to remain in control.
Soon after King Edward died in July 1553 Northumberland and his supporters proclaimed Jane Queen of England on 10 July 1553. Jane fainted and was reluctant at first, but her in-law's and her own family persuaded her to accept the crown.
Within days it became clear that the supporters of Mary Tudor, Edward's Catholic sister, by far outnumbered those of Northumberland. Even Jane's own father proclaimed Mary the rightful queen, probably in an attempt to save his own head. So after only nine days, on 19 July, Mary was proclaimed rightful Queen. This meant of course that Jane was a usurper and traitor.
Northumberland was arrested and executed a month later. His son Guildford Dudley and Lady Jane Grey were also brought to the Tower. They were both tried for treason and sentenced to the death penalty.
At firs,t it looked like Queen Mary I would pardon Jane. After all, Mary and Jane were related and Jane was just a teenager of 15 or 16 years old. Again it was a guy who sealed Jane's faith; her own father this time.
He thought it necessary to take part in Sir Thomas Wyatt’s rebellion in 1554. This uprising, provoked by Queen Mary's plan to marry Prince Philip of Spain, was considered a direct attack to the new Queen. The rebel leaders were committed Protestants and considered traitors. The outcome was evident, they were all convicted of high treason, and executed.
As a result, Jane and her husband were no longer protected by the Queen. They were beheaded on February 12, 1554; Jane's father was executed 11 days later.