In 1554 King Lud and his sons looked down on a street seething with angry men, and saw blood shed upon the hill leading to St. Paul's. Sir Thomas Wyat, a Kentish gentleman, urged by the Earl of Devon, and led on by the almost universal dread of Queen Mary's marriage with the bigoted Philip of Spain, assembled 1,500 armed men at Rochester Castle, and, aided by 500 Londoners, who deserted to him, raised the standard of insurrection. Five vessels of the fleet joined him, and with seven pieces of artillery, captured from the Duke of Norfolk, he marched upon London. Soon followed by 15,000 men, eager to save the Princess Elizabeth, Wyat marched through Dartford to Greenwich and Deptford. With a force now dwindled to 7,000 men, Wyat attacked London Bridge. Driven from there by the Tower guns, he marched to Kingston, crossed the river, resolving to beat back the Queen's troops at Brentford, and attempt to enter the City by Lud Gate, which some of the Protestant citizens had offered to throw open to him. The Queen, with true Tudor courage, refused to leave St. James's, and in a council of war it was agreed to throw a strong force into Lud Gate, and, permitting Wyat's advance up Fleet Street, to enclose him like a wild boar in the toils. At nine on a February morning, 1554, Wyat reached Hyde Park Corner, was cannonaded at Hay Hill, and further on towards Charing Cross he and some three or four hundred men were cut off from his other followers. Rushing on with a standard through Piccadilly, Wyat reached Lud Gate. There (says Stow) he knocked, calling out, "I am Wyat; the Queen has granted all my petitions."

But the only reply from the strongly-guarded gate was the rough, stern voice of Lord William Howard—"Avaunt, traitor; thou shalt have no entrance here."

No friends appearing, and the Royal troops closing upon him, Wyat said, "I have kept my promise," and retiring, silent and desponding, sat down to rest on a stall opposite the gate of the "Belle Sauvage." Roused by the shouts and sounds of fighting, he fought his way back, with forty of his staunchest followers, to Temple Bar, which was held by a squadron of horse. There the Norroy King-of-Arms exhorted him to spare blood and yield himself a prisoner. Wyat then surrendered himself to Sir Maurice Berkeley, who just then happened to ride by, ignorant of the affray, and, seated behind Sir Maurice, he was taken to St. James's. On April 11th Wyat perished on the scaffold at Tower Hill. This rash rebellion also led to the immediate execution of the innocent and unhappy Lady Jane Grey and her husband, Guilford Dudley, endangered the life of the Princess Elizabeth, and hastened the Queen's marriage with Philip, which took place at Winchester, July 25th of the same year.

In the reign of Elizabeth (1586), the old gate, being "sore decayed," was pulled down, and was newly built, with images of Lud and others on the east side, and a "picture of the lion-hearted queen" on the west, the cost of the whole being over £1,500.

Lud Gate became a free debtors' prison the first year of Richard II., and was enlarged in 1463 (Edward IV.) by that "well-disposed, blessed, and devout woman," the widow of Stephen Forster, fishmonger, Mayor of London in 1454. Of this benefactress of Lud Gate, Maitland (1739) has the following legend. Forster himself, according to this story, in his younger days had once been a pining prisoner in Lud Gate. Being one day at the begging grate, a rich widow asked how much would release him. He said, "Twenty pounds." She paid it, and took him into her service, where, by his indefatigable application to business, he so gained her affections that she married him, and he earned so great riches by commerce that she concurred with him to make his former prison more commodious, and to endow a new chapel, where, on a wall, there was this inscription on a brass plate:—

"Devout souls that pass this way,
For Stephen Forster, late Lord Mayor, heartily pray,
And Dame Agnes, his spouse, to God consecrate,
That of pity this house made for Londoners in Lud Gate;
So that for lodging and water prisoners here nought pay,
As their keepers shall all answer at dreadful doomsday."

This legend of Lud Gate is also the foundation of Rowley's comedy of A Woman Never Vext; or, The Widow of Cornhill, which has in our times been revived, with alterations, by Mr. Planché. In the first scene of the fifth act occurs the following passage:—

"Mrs. S. Forster. But why remove the prisoners from Ludgate?
"Stephen Forster. To take the prison down and build it new,
With leads to walk on, chambers large and fair;
For when myself lay there the noxious air
Choked up my spirits. None but captives, wife,
Can know what captives feel."

Stow, however, seems to deny this story, and suggests that it arose from some mistake. The stone with the inscription was preserved by Stow when the gate was rebuilt, together with Forster's arms, "three broad arrow-heads," and was fixed over the entry to the prison. The enlargement of the prison on the south-east side formed a quadrant thirty-eight feet long and twenty-nine feet wide. There were prisoners' rooms above it, with a leaden roof, where the debtors could walk, and both lodging and water were free of charge.

Strype says the prisoners in Ludgate were chiefly merchants and tradesmen, who had been driven to want by losses at sea. When King Philip came to London after his marriage with Mary in 1554 thirty prisoners in Lud Gate, who were in gaol for £10,000, compounded for at £2,000, presented the king a well-penned Latin speech, written by "the curious pen" of Roger Ascham, praying the king to redress their miseries, and by his royal generosity to free them, inasmuch as the place was not sceleratorum carcer, sed miserorum custodia (not a dungeon for the wicked, but a place of detention for the wretched).