Conversation so far:
What did Juan Ponce de León have to do with spain?
Juan Ponce de León was born in the village of Santervás de Campos in the northern part of what is now the Spanish province of Valladolid
Who were Juan Ponce de León's parents?
The identity of his parents is still unknown, but he appears to have been a member of a distinguished and influential noble family.
What was Juan Ponce de León's greatest accomplishment?
Juan Ponce de León was known for leading the first official European expedition to Florida and the first governor of Puerto Rico.

Question: what is the most important fact in the article?
Self-contained rewrite: What is the most important fact in the article on Juan Ponce de León besides his exploration of Florida and governorship of Puerto Rico?