His death gave his son a claim on the gratitude of Henry VII.

and Henry VIII.; and similarity of tastes secured him rapid promotion at the young King's Court.

Created Viscount Lisle, he served in 1513 as marshal of Henry's army throughout his campaign in France.

With the King there were said to be "two obstinate men who governed everything";[185] one was Wolsey, the other was Brandon.
In July he was offering his hand to Margaret of Savoy, who was informed that Brandon was "a second king," and that it would be well to write him "a kind letter, for it is he who does and undoes".[186] At Lille, in October, he continued his assault on Margaret as a relief from the siege of Tournay; Henry favoured his suit, and when Margaret called Brandon a _larron_ for stealing a ring from her finger, the King was called in to help Brandon out with his French.

Possibly it was to smooth the course of his wooing that Brandon, early in 1514, received an extraordinary advancement in rank.