Of all the dukes of burgundy, it was who was the most enthusiastic art collector and lover of books.

Of all the dukes of Burgundy, it was Jean, Duke of Berry, who was the most enthusiastic art collector and lover of books.

Explanation:

Jean was the third son of John II of France. Despite being an experienced politician, Jean had little interest in military life and spent much of his time and money on his collection of art objects and curiosities. Vain, sensual, unscrupulous, he protected the arts and letters and was a great patron and decorated his castles with magnificence.

homophonic or a tonal