Prince Harry and actress Meghan Markle are officially married. People have wondered what their royal titles would be in the United Kingdom. Well, the wait is over, as now we all know. 

Prince Harry will be known as His Royal Highness The Duke of Sussex, Earl of Dumbarton and Baron Kilkeel. Meghan will be known forever as Her Royal Highness The Duchess of Sussex, according to the royal collection.

She's the first person to hold the title, CNN reports. But she's in great company. 

Behind every royal title, there's a story and meaning attached to it. The only other person to have the title of Duke of Sussex was Prince Augustus Frederick, son of King George III and Queen Charlotte.

Frederick was a passionate anti-slavery campaigner and an advocate for Catholics and Jews. This title was bestowed upon him in 1801.

As the son of what many consider England's first black royal, Queen Charlotte, Frederick's title being passed along to Prince Harry holds extreme historic significance.

The Queen chose their titles prior to Saturday's royal wedding. She chose from the customary titles of duke, marquess, earl, viscount or baron and women titles of duchess, marchioness, countess, viscountess, and baroness. To be a named a duke is the highest honor. Typically, family members hold the title of duke or duchess. 

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