The Duke of Berry was quite impressed with the Limbourg brothers and in 1411, gifted Paul a large house in Bourges. The Duke appointed the Limbourgs as his varlets de chamber, too. The Limbourg brothers were next commissioned in 1413 to create the Trés Riches Heures du duc de Berry, but sadly, the work was unfinished.
All three brothers died in early 1416, likely from plague.
To give some perspective, Herman was roughly 31, Paul 29 or 30, and Johan 28.