It might be pushing it to call Ponce de Leon a vagabond since he was a career soldier, but in terms of dreams and adventure, certainly he fits the bill as someone who not only traveled broadly, but was foolish enough to chase the fountain of youth.
Ponce de Leon was a Spanish explorer and was the first European soldier to set foot in Florida. He set up the oldest European settlement in Puerto Rico and he also found the Gulf Stream in the Atlantic Ocean . Ponce de Leon, was looking for a fabulous fountain of youth and a way to join the ranks of the truly wealthy people.
Ponce de Leon was born in Santervas, Spain, he fought against the Moors as a solider in southern Spain and he traveled on the second journey of Christopher Columbus in 1493 to Americas. But he did not return with Columbus to Spain, he stayed in Santo Domingo which is called the Dominical Republic today. That’s a pure vagabond move, Ponce.
He was the governor of Dominican province of Higuey. 
He heard about gold in the neighboring island of Borinquen (Puerto Rico at present) and he conquered the island and claimed it for Spain. In the process he and his men brutally killed a huge portion of the native population. Later he was appointed governor of island. He was removed from the Governorship because of his intense cruelty to the local population and keep in mind, the Spanish weren’t known to be too nice and they thought he was cruel. .
Later Ponce de Leon was handed the right to find and take Bimini Island which is called the Bahamas today. He traveled from Puerto Rico with three ships, the Santiago, the San Cristobal and the Santa Maria along with 200 men. He stopped at Grand Turk Island and San Salvador, and reached the coasts of Florida in 1513.
He named the place “Pascua de Florida” which means feast of flowers because they first located land in 1513 which was a Palm Sunday. And one can assume that the flowers were blooming. Then Ponce de Leon claimed the land for Spain.
Further Reading
Ponce de Leon and the Discovery of Puerto Rico and Florida
Ponce de Leon and the Search for the Fountain of Youth
Eyewitness Travel Guide – Florida
He headed south into the warm currrent Gulf Stream (thus blundering on it and losing the smallest of his ships for two days, again in vagabond fashion). While they searched for the ship,a fight broke out between men of Ponce de Leon and Native Americans. Still, they managed to ‘discover’ the Florda Keys and more…
Many people believe that Ponce de León discovered Florida while searching for the Fountain of Youth. In his Historia General y Natural de las Indias of 1535, Gonzalo Fernández de Oviedo y Valdés wrote that Ponce de León was looking for the waters of Bimini to cure his aging. Most historians hold that the search for gold and the expansion of the Spanish Empire were far more imperative than the any potential search for the fountain, but they don’t understand the things that drive normal men to leave family and home in search of something remarkable. Personally, I’m certain he was looking for the fountain of youth.
this is nice