The Tyndale family came originally from Northumberland, but this MP belonged to a cadet branch which moved south to Tansover during, or just before, the reign of Edward I. In addition to his inheritance there, he also acquired a title to land in the Northamptonshire village of Yarwell, which his parents bought in 1358 while he was probably still a child. This property was held in chief of the Crown and carried with it the office of forester of the royal bailiwick of Sule in the forest of Cliffe, a post held by Tyndale for most of his adult life. Over the years he became seised of other estates in Staverton and Lowick, although his most notable acquisition in Northamptonshire was almost certainly the manor of Helpston, which was settled upon him in 1383 by his influential friend and neighbour, Sir William Thorpe. Tyndale was subsequently able to lease out the manor at an annual rent of £25 6s.8d., so it clearly made an appreciable difference to his landed income.
Tyndale must have been quite young when he first took a seat on the Northamptonshire bench, and it is possible that he was helped at this time by his connexion with the Zouches. In February 1378 he and Sir William, the future 3rd Lord Zouche, obtained the farm of the manor of Ravensthorpe and its appurtenances in Yorkshire to hold during the minority of the heir to the Cantilupe estates at an annual farm of £40, payable to the Crown. Sir William’s share of the lease was enlarged in December 1381 to include the manor of Farnham in the same county, and on this occasion Tyndale offered sureties on his behalf at the Exchequer. As one of the two surviving cousins of the late Sir William Cantilupe, Zouche himself advanced a title to the property in question: his failure to make good his claim probably led him and Tyndale to exploit their joint tenancy, for in 1391 a royal commission was set up to investigate the various wastes and depredations said to have taken place while they were farmers. Zouche had, meanwhile, succeeded to the family title in April 1382 on the death of his father, the 2nd Lord, whose will contained a bequest of 40s. to Tyndale. The latter immediately stepped forward to assist his friend, being made a trustee of almost all his newly acquired patrimony and also acting as a mainpernor for him in Chancery. The two men remained on close terms until Zouche’s death in 1396, appearing together as witnesses to local deeds and maintaining a zealous interest in each other’s affairs. In December 1391, for instance, they offered joint securities of £100 to John, Lord Lovell, perhaps as a guarantee of the settlement made upon his marriage to Zouche’s daughter, Eleanor.
Another of Tyndale’s associates was Sir William Thorpe, from whom, as we have seen, he acquired the manor of Helpston. He and Thorpe were co-feoffees of the Zouche estates—a mutual connexion which may first have brought them together. At all events, the elderly courtier had sufficient confidence in the MP to make him one of the three trustees responsible for setting up a richly endowed chantry at Marholm for which he made provision shortly before his death. In his will of April 1391, Sir William left Tyndale one of his best horses, a sword and a crossbow as a token of their friendship. Most of the surviving information about Tyndale concerns his involvement in the affairs of others, although his own interests were occasionally at stake as well. In May 1377, for instance, he and two colleagues offered a joint bond of 1,000 marks to Nicholas Chaddesden, each of the three pledging part of their estates as security, and from time to time Tyndale was prepared to go surety in quite substantial sums for friends with business before the courts at Westminster. In November 1387, for example, he offered pledges of £200 for the good behaviour of John Mulsho, another member of the circle surrounding Sir William Thorpe and the Zouches. He was fairly successful avoiding litigation himself and, save for an action of mort d’ancestor brought against him at the Northampton assizes by John Knyvet in 1394, he had little to fear from rival claims to his property.
We do not know exactly when Tyndale became bailiff of the liberty of the abbot of Peterborough, but it seems likely that he had already assumed office by January 1394, the date of his first appointment as a parliamentary proxy by the abbot. He again undertook this duty three years later, at about the same time as the right to present to the living of Cottingham, Northamptonshire, came into his hands.
Not much is known about Tyndale after his last return to Parliament in 1407. In May 1408 he bound himself in securities of £26 to a Yorkshireman named John Horne, and about two years later he agreed to act as a trustee for his near neighbour, Robert Chiselden, who then faced the prospect of dispossession for outlawry.