William Petre, 2nd Baron Petre

From its position on the Harwich road, and proximity to London, Ingatestone Hall was a constant meeting place and refuge for those disaffected to the Protestant religion or to the reigning sovereign. For example:

13th July 1627. My Lord Petre’s son going over sea to Flanders with many letters, and two barrels of treasure, gold and silver, in a pink, is brought back and committed, and here it is said, that at his father’s house at Ingatestone in Essex divers great Papists had been in consultation about a fortnight and departed thence but on Saturday last.

Secret guests may often have used the hiding place discovered at the Hall in 1855. It is very probable that some of the inns had similar places of concealment for these visitors, whom it would not always be safe to hide in the Hall, for example, the attic in the White Hart, the huge chimney block of the Eagle, behind the present billiard room, the present great cupboards of the Crown. Many of the houses about Fryerning Hall by the old chimney stacks, and for example, Furze Hall might reveal similar ones if thoroughly explored.

It does not appear that the 2nd Baron got into any serious trouble about the Papists who frequented Ingatestone, in part due to the support of King Charles I. Possibly, by this time the Hall was used as a dower house, or a residence for the sons, as the 3rd Baron is described in 1638 by William Riley, Blue Mantle, as dying at West Thorndon, and being buried in an old vault appropriated to his family in the chancel of the Parish Church of Ingatestone.

William, 2nd Baron, died in May 1637, and is buried in the same vault. The tomb, which he erected in the north chapel in memory of his parents, bears also, his own effigy and that of his wife and children, but the tablet over his head is still waiting for an inscription.

Petre had married Katherine Somerset (1575–1624), second daughter of Edward Somerset, 4th Earl of Worcester in a double ceremony with her sister Elizabeth who married Sir Henry Guilford. Edmund Spenser celebrated the event in his poem, Prothalamion. They had seven surviving sons and three daughters. Katherine Petre danced in the court masque Tethys' Festival on 5 June 1610 in the character of the "Nymph of Olwy", a tributary of the River Usk.[3]

His daughter Elizabeth Petre (1597–1656) married William Sheldon of Beoley, Worcestershire.

A pair of paintings among the Petre Pictures dating from 1590, attributed to Marcus Gheeraerts, were once thought to be the portraits of William's parents, John Petre, 1st Baron Petre and Mary. The paintings were restored after the fire at Thorndon Hall in 1876 and brought to Ingatestone Hall, and bear painted inscriptions naming the subjects. Art historian Roy Strong contends that these are in fact portraits of William and his wife Katherine. The portraits are colourful and relaxed, showing fashionable changes in costume. Lord Petre wears a white ruff over a lace collar, embroidered doublet, full breeches, bobbed hair, moustache and slight beard and, in the fashion of the time, the minute patch of hair below the bottom lip. His wife is equally in fashion; the cartwheel-topped skirt, the full upper sleeves and a variation of ruff open in front to show the neck, a delicate silver tiara and the splendid necklace of pearls, 1466 in all.[1]

• Leigh Rayment's Peerage Pages