The Prebendaries' Plot was named after the five prebendary canons of Canterbury Cathedral (including William Hadleigh, a monk at Christchurch Canterbury prior to the monastery's dissolution) who formed its core. Others involved were two holders of the new cathedral office of "six preacher" (created in 1541), along with various local non-cathedral priests and Kentish gentlemen (eg Thomas Moyle, Edward Thwaites and Cyriac Pettit). Simultaneous agitation at the court in Windsor, and the conspiracy in general, was led covertly by Stephen Gardiner, bishop of Winchester.
Henry VIII's chaplain Richard Cox was charged with investigating and suppressing it, and his success (240 priests and 60 laypeople of both sexes were accused of involvement) led to his being made Cranmer's chancellor (and later, under Elizabeth, bishop of Ely). Gardiner survived, though his relation Germain Gardiner, who had acted as his secretary and intermediary to the plotters in Kent, was executed in 1544 for questioning the Royal Supremacy.
So Blessed Germain Gardiner was left as the scapegoat to suffer for the plot, while Henry VIII, still valuing Bishop Stephen Gardiner's efforts in supporting both Henry's "Great Matter" and his more "conservative" reformation of the Church, spared his uncle.
Along with Gardiner, Blessed John Larke, friend of St. Thomas More and former rector of Chelsea (More's parish) and Blessed John Ireland, also connected with St. Thomas More and Chelsea, were executed for denying Henry VIII's Supremacy. Robert Singleton, a parish priest, was also executed under a charge of treason, but he has not been beatified.
John Heywood, the playwright and grandfather of John Donne was also on the scaffold at Tyburn sentenced to death, but he recanted and was spared. He also had connections to St. Thomas More and survived the ups and downs of the Tudor succession until Elizabeth I's reign. Then he went into exile in Mechelen, Belgium where he died around 1580. You may have used one of John Heywood epigrams and not realized the source: wikipedia lists many of the most famous:
What you have, hold.
Haste maketh waste. (1546)
Out of sight out of mind. (1542)
When the sun shineth, make hay. (1546)
Look ere ye leap. (1546)
Two heads are better than one. (1546)
Love me, love my dog. (1546)
Beggars should be no choosers. (1546)
All is well that ends well. (1546)
The fat is in the fire. (1546)
I know on which side my bread is buttered. (1546)
One good turn asketh another. (1546)
A penny for your thought. (1546)
Rome was not built in one day. (1546)
Better late than never. (1546)
An ill wind that bloweth no man to good. (1546)
The more the merrier. (1546)
You cannot see the wood for the trees. (1546)
This hitteth the nail on the head. (1546)
No man ought to look a given horse in the mouth. (1546)
Tread a woorme on the tayle and it must turne agayne. (1546)
Many hands make light work. (1546)
Wolde ye bothe eate your cake and haue your cake? (1562)
When he should get aught, each finger is a thumb. (1546)
His son Jasper Heywood, SJ was briefly in charge of the English mission, arrested and exiled. He is best known for his translations of Seneca.