She was right: no sooner had she won her victories at Orleans, Jargeau, Pathay, and elsewhere (May-June 1429) than James made a truce with England which enabled Cardinal Beaufort to throw his large force of anti-Hussite crusaders into France, where they secured Normandy.

The Scots in France, nevertheless, fought under the Maid in her last successful action, at Lagny (April 1430).
An heir to the Crown, James, was born in October 1430, while the King was at strife with the Pope, and asserting for King and Parliament power over the Provincial Councils of the Church.

An interdict was threatened, James menaced the rich and lax religious orders with secular reformation; settled the Carthusians at Perth, to show an example of holy living; and pursued his severities against many of his nobles.
His treatment of the Earl of Strathearn (despoiled and sent as a hostage to England) aroused the wrath of the Earl's uncle, Robert Graham, who bearded James in Parliament, was confiscated, fled across the Highland line, and, on February 20, 1437, aided, it is said by the old Earl of Atholl (a grandson of Robert II.

by his second marriage), led a force against the King in the monastery of the Black Friars at Perth, surprised him, and butchered him.

The energy of his Queen brought the murderers, and Atholl himself, to die under unspeakable torments.
James's reforms were hurried, violent, and, as a rule, incapable of surviving the anarchy of his son's minority: his new Court of Session, sitting in judgment thrice a-year, was his most fortunate innovation..