A deed, copied on paper and filed with a collection of deeds of the Queen's Remembrancer's Department of the Exchequer, records a grant by Robert Lenham, esquire, heir of Thomas Rotherwell, in the time of Henry VII. Robert Lenham died in 1491, so the grant must have been made during the preceding six years. He made a grant "to Alexander Holowey, John Clerk, John Blithe, John Pestowe, and John Wyldar, of the manor of Thedemersh with the advowson of the parish church of the same; with further grant of all his other lands and tenements &c. in Thedemersh, Pangbourn, Sulham, Tilehurste, and Ufton Robarte."
William Berry's Encyclopedia Heraldica, Complete Dictionary of Heraldry, Volume II, describes the arms of Wilder, and notes that they were granted to John Wilder of Nunhide, Berkshire. For these arms to have been granted to this John, and descended to later generations of Wilders, it must be inferred that Nicholas Wilder was this John's son. However, the author believes that the arms would more likely have been granted in the 17th century to the first John Wilder to bear the appellation of gentleman.
Various sources describe the arms and crest of Wilder as "gules from a fess or, charged with two barrulets azure a demi lion, rampant, issuant, of the second. Crest, a savage's head, affrontee, couped at the shoulders, the temples entwined with woodbines, all proper."
In plain English, that would be a red shield with a horizontal gold stripe in the middle, the stripe having a smaller blue stripe adjacent above and below. Above the upper blue stripe, in the top red portion, there is a side view of the front half of a lion, as if standing on it's hind legs and waving its paws.152