He was knighted during the reign of Edward IV by Richard, Duke of Gloucester on 24 August 1482 at the capture of Berwick upon Tweed.
Edward became High Sheriff of Lancashire for life in the autumn of 1485; on 15 October he was directed to provide against Scottish attacks, and on 1 December he was granted the office of keeper of New Park, Langley; he also became knight of the body to the king.
[2] Popular ballads represent the English army as begging the Earl of Surrey to put Stanley in command of the van; Surrey, out of jealousy, placed him in the rear, where nevertheless he distinguished himself, forcing the Scots to evacuate their position of vantage on the hill, and killing James IV of Scotland with his own hand (his name occurs in a line of Walter Scott's Marmion: 'Charge, Chester, charge—on, Stanley, on').
These details receive no confirmation from the official version; but Thomas Ruthall, bishop of Durham, reported that Stanley behaved well, and recommended his elevation to the peerage for his services.
Monteagle firstly married Anne Harrington, daughter of Sir John Harrington, by whom he had no issue He married secondly, Elizabeth Vaughan, daughter of Sir Thomas Vaughan of Tretower, Brecknockshire, and widow of John Grey, 8th Baron Grey de Wilton, by whom he had: Thomas Stanley, Bishop of Sodor and Mann during the English Reformation claimed he was Edward's bastard son.