It's not, it's called the Wilhelmus.
William of Nassau is just the alternative title, but hardly ever used.
William of Orange was the Count of Nassau, so he was soemtimes (in history) called William of Nassau.
He lead the Dutch struggle for independance, and like many anthems, it originated in the a (the Dutch in this case) nation's struggle to achieve independence. It tells of (William of Orange), his life and why he is fighting against the King of Spain.
The island was inhabited but later occupied by the Dutch who named it Mauricius after prince Maurice of Nassau.
The main town on New Providence, Nassau, was named by Governor William T. Smith in 1695. The name "Nassau" was chosen in honor of the House of Nassau, which was the ruling house of the Dutch Republic and later of the United Kingdom. The town has since grown to be the capital of the Bahamas.
Nassau is named after King William III of England, who was originally from the House of Orange-Nassau. He reigned from 1689 to 1702 and played a significant role in the Glorious Revolution in England.
Nassau was named after William III of England, who was also known as William of Orange-Nassau. He became king in the late 17th century and played a significant role in the history of the Bahamas by establishing British rule over the islands.
Nassau became a city in 1695 when the seat of government for the Bahamas was moved there from St. Anne's. It formally became known as Nassau in the late 18th century, named after William III of Orange-Nassau.
Dirk Hartog Island. Dirk Hartog, the explorer, was the captain of the second group of Europeans to land on Aussie soil. This island republic was named after a Dutch prince of Nassau.
The first Dutch settlement in the Americas was founded in 1614: Fort Nassau, on Castle Island in the Hudson, near present-day Albany. It was later replaced by Fort Oranje (in English: Fort Orange) at present-day Albany. Both forts were named in honor of the Dutch House of Orange-Nassau.
Because orange is the national colour. It is their national colour because of their royal family - the House of Oranje-Nassau -- dates back to Willem van Oranje (William of Orange). Today the colour orange symbolizes a broader pride in the country and in being Dutch.
The Dutch referred to Mauritius as "Mauritsstad" or "Mauritius" in honor of Prince Maurits of Nassau-Siegen. The island was initially named "Mauritius" when it was discovered in 1598, but the term "Mauritsstad" was later used for the capital they established there. The Dutch colonized Mauritius in the 17th century, primarily using it as a waystation for their trade routes.
The Bahamas named Nassau its' capital because when the Eleutheran Adventurers were here the moved to Nassau, and they saw it was easier to live there so they named it the capital of The Bahamas
It was named by Colonel Robert Gordon who was commander of the Dutch East India Company garrison at Cape Town. It was so named in honour of William of Orange.
Mauritius was named after a Dutch prince.