Two images of Leopold I, or Leopold Habsburg  (1640 – 1705). He was a Holy Roman Emperor, King of Hungary and King of Bohemia. He was a member of the original House of Habsburg the second son of the emperor Ferdinand III.

William I, Prince of Orange (1533 – 1584) or simply William of Orange (Dutch: Willem van Oranje). He was born in the House of Nassau as Count of Nassau-Dillenburg. A wealthy nobleman, William originally served the Habsburgs as a member of the court of Margaret of Parma, governor of the Spanish Netherlands. 

Two images of Maurice, 1521–53, duke (1541–47) and elector (1547–53) of Saxony. A member of the original Albertine branch of the ruling House of Saxony.

(This is taken from George T. Ferris' Great Musical Composers, originally published in 1887; this text edited by Daniel McAdam.)At the age of twenty-eight Haydn composed his first symphony. Soon after this he attracted the attention of the old Prince Esterhazy, all the members of whose family have become known in the history of music as generous Maecenases of the art. “What! you don’t mean to say that little blackamoor” (alluding to Haydn’s brown complexion and small stature) “composed that symphony?” “Surely, prince,” replied the director Friedburg, beckoning to Joseph Haydn, who advanced towards the orchestra. “Little Moor,” says the old gentleman, “you shall enter my service. I am Prince Esterhazy. What’s your name?” “Haydn.” “Ah! I’ve heard of you. Get along and dress yourself like a Kapellmeister.” 
Paul Marc Washington,