Sir John, Knight, his son, was created a Knight-Banneret, and slain at Shrewsbury, 1403, fighting under the banner of Henry IV. against the Percies. Dying s.p., his brother Walter succeeded, whose second son, Thomas, was ancestor, by his wife, Agnes Scargill, of the Calverleys of Morley and of county Cumberland.

Sir William, his grandson, was created a Knight-Banneret for valour in the Scottish wars, by the Earl of Surrey; his grandson, Sir William Knight, was Sheriff of Yorkshire, and died 1571; Thomas, his second son, was ancestor of the Calverleys of county Durham. Sir Walter, his son, had issue three sons, of whom Edmund, the third, was ancestor of the Calverleys of counties Sussex and Surrey.

William, the eldest son of Sir Walter, whose portrait was exhibited at York in 1868, married Catherine, daughter of Sir John Thornholm, Knight, of Haysthorpe, near Bridlington. This lady was a devoted Catholic, and suffered much persecution for adhering to her faith and giving refuge to proscribed priests, the estates being sequestered and some manors sold to pay the fine for recusancy. They had issue Walter, the subject of this tradition.

Walter Calverley was born in the reign of Elizabeth, and in his youth witnessed the relentless persecutions which his family, being adherents of the old faith, had to endure from the ascendant Protestantism, which held the reins of government. Those of the reformed religion were wont to style Mary the "Bloody Queen," for the number of executions and barbarities which, in the name of religion, stained the annals of her reign; but it was a notable instance of the pot-and-kettle style of vituperation, as the burning and hanging and quartering and pressing to death of Jesuits and seminary priests, and of lay men and women who afforded them refuge, went on as merrily during the reigns of her two following successors, as did the roasting of heretics at Smithfield and elsewhere under Bonner and Gardiner. He was witness, when a boy, of the barbarous treatment to which his mother was subjected for worshipping God according to the dictates of her conscience and for daring to shelter priests of her persuasion.

Walter was a lad of strong passions and vehement spirit, and the sight of the sufferings endured by the friends and co-religionists of his family drove him almost to madness. He would stamp his foot, clench his fist, and vow vengeance upon the perpetrators, and it is highly probable that he consorted and plotted with Guy Fawkes and others of the gunpowder conspirators at Scotton, near Knaresborough, and might have had a hand in the great plot itself, which culminated and collapsed in the same year that he committed the crime which cost him his life.

He married Philippa, daughter of the Hon. Henry Brooke, fifth son of George, fourth Baron Cobham, and sister of John, first Baron of the second creation, and by her had issue three sons, the third of whom, Henry, succeeded to the estates, whose son, Sir Walter, was a great sufferer in person and estate for his loyalty during the Civil War, and who was father of Sir Walter, who was created a baronet by Queen Anne in 1711, the title becoming extinct in 1777, on the death, without surviving issue, of his son, Sir Walter Calverley-Blackett.

For a few years the newly-married couple lived in tolerable harmony and happiness, such as falls to the lot of most married people. They looked forward to giving an heir to the family estates who should perpetuate the name in lineal descent; but the months and years passed by, and they began to experience the truth that "hope deferred maketh the heart sick," as no heir made his appearance, which was an especial disappointment to the Lord of the Calverley domain, and gave rise to the idea that he had married one who was barren, and incapable of giving him an heir. Brooding over this impediment to his hopes, he grew moody and discontented; treated his wife not only with neglect, but upbraided her with opprobrious epithets, treated her with cold and cruel disfavour, and in his occasional violent outbursts of passion would wish her dead, that he might marry again to a more fruitful wife. Moreover he gave way to over-indulgence in deep potations of ale, sack, and "distilled waters," which added fire and force to his naturally fierce temperament, and rendered him almost maniacal in his acts. He was profuse in his hospitality to his neighbours, frequently giving dinner parties to his roystering friends, with whom he would sit until late in the night, or rather until early in the morning carousing over their cups.

Amongst the friends who thus visited him was a certain country squire of the name of Leventhorpe, a young fellow of handsome figure and insinuating address, who would drink his bottle with the veriest toper, and yet would conduct himself in the company of ladies with the utmost decorum and most fascinating demeanour, would converse with them on flowers and birds and tapestry work, and quote with admirable accentuation and feeling passages from the writings of the popular poets, or recite with pathos and humour the novelettes of the Italian romancists, which then were the delight of every lady's boudoir. He was introduced by Calverley to his wife, and she being naturally of a lively, vivacious disposition, and, like ladies of the present age, a passionate admirer of works of fiction and imagination, she took great pleasure in his society, as, indeed, he did in hers, and he was consequently a constant visitor at Calverley Hall, whether invited or not, and whether the lady's husband was at home or not; but always was he gladly welcome, and in pure innocence and without any idea of impropriety, by the lady. On his side, too, he went to the house as a man might do to that of a sister, without any sentiment save that of friendship, or, at the utmost, a feeling of platonic love. Not so, however, the lady's husband. He began to feel annoyed and disquieted at witnessing their growing intimacy, but hitherto saw no reason to doubt the fidelity of his wife. Some twelve months after the introduction of Leventhorpe to the Hall, symptoms became evident of the probable birth of a child, and Calverley at first hailed the prospect with satisfaction, praying and hoping that it might prove to be the long-wished-for son and heir. In due course the child was born, and of the desired sex, and great were the rejoicings and splendid the banqueting at the christening. The next year a second son made his appearance, and then dark thoughts and suspicions began to flit across Calverley's mind. He considered it strange that no child should have been born during the early years of his marriage, but that immediately after Leventhorpe's introduction to the house his wife began to prove fruitful, and had borne two children, with the prospect of a third. He brooded over these dark thoughts by night and day until they ripened into positive jealousy and the belief that the children were Leventhorpe's, and not his own.

Influenced by these sentiments, he drank still more deeply, and was frequently subjected to delirium tremens and maniacal fits of passion, which rendered him the terror of all by whom he was surrounded. He could not openly accuse Leventhorpe of a breach of the seventh commandment, of which he believed him guilty, as he had no basis of fact upon which to ground the charge; but he found means to quarrel with him on some frivolous point, and made use of such expressions of vituperation as he thought would impel him to demand satisfaction at the sword's point; but Leventhorpe was a quiet, peaceable man, who swallowed the affront, attributing it to the deranged state of his friend's mind, induced by too free application to the bottle; and he simply abstained from visiting the house.

"He is a coward as well as a knave," said Calverley to himself. "No gentleman would listen to such language as I have used and submit to it patiently like a beaten cur, without resenting it with his sword, and this circumstance proves his guilt, and the certainty of my suspicions; but I will be amply revenged on both him and his paramour and their progeny;" and he drank and drank day after day, and more and more deeply, until he at length brought himself to a state fitting him for a madhouse and personal restraint. Many a time he sought for Leventhorpe, with the hope of provoking him to fight, but was not able to accomplish his purpose, as circumstances had called Leventhorpe to London, where he remained some months.