yes. He was brought in to help with the planned post-assassination rebellion.
Francis Tresham
I think you mean Francis Tresham and he was one of the plotters
There were 13: Robert Catesby, Robert Keyes, Ambrose Rookwood, Thomas Wintour, Sir Everard Digby, Thomas Percy, Francis Tresham and Thomas Bates
He sent a letter to Parliment saying it was gong to be blown up because his brother was in Parliment the same day as James I
the plotters were John Wright, Christopher Wright, Thomas Wintour, Robert Wintour, Thomas Percy, Guido Fawkes, Robert Keys, Thomas Bates, John Grant, Sir Ambrose Rookwood, Sir Everard Digby and Francis Tresham
The twelve men involved in the Gunpowder Plot of 1605 included Robert Catesby, Thomas Wintour, John Wright, Robert Wintour, Christopher Wright, Guy Fawkes, Thomas Bates, Francis Tresham, John Grant, Ambrose Rookwood, William Parker (Lord Monteagle), and Sir Everard Digby. Robert Catesby was the leader and mastermind behind the plot aimed at assassinating King James I and blowing up the Houses of Parliament. The plan ultimately failed, leading to the arrest and execution of many conspirators.
Robert and Thomas Wintour,Thomas Percy,Christopher and John Wright,Francis Tresham,Everard Digby,Ambrose Rookwood,Thomas Bates,Robert Keyes,Hugh Owen,John Grant and the man who is said to have organised the whole plotRobert Catesby
there were 13 in total, so choose one: Robert Catesby Thomas Wintour Jack Wright Thomas Percy Guy Fawkes Robert Wintour Christopher Wright Robert Keyes Thomas Bates John Grant Ambrose Rookwood Francis Tresham Evard Digby
James I was not killed by Guy Fawkes, the plot was discovered in time. The Gunpowder Plot, an attempt to kill James I and most of the Protestant aristoracy was led by Robert Catesby. Others involved in the plot were Thomas and Robert Winter, John and Christopher Wright, Robert Keyes, Thomas Percy, John Grant, Ambrose Rokewood, Sir Everard Digby, Francis Tresham and Thomas Bates.
The plotters of the Gunpowder Plot were betrayed by a letter sent by one of the conspirators, Francis Tresham, to his brother-in-law, warning him to stay away from the Houses of Parliament on November 5, 1605. This letter raised suspicions, prompting authorities to investigate further. When the plot was uncovered, several conspirators were arrested, and the plan to blow up King James I and Parliament was thwarted. The betrayal ultimately led to the execution of many of the plotters.
The Gunpowder Plot of 1605 is also referred to as the Gunpowder Treason Plot. This plot was a plot to blow up James the First. One can learn more specifics about this plot on the History website.
The gunpowder was being hidden in the gunpowder plot. It was hidden in a cellar under the house of parliament.