Isabela takes its name from Queen Isabella II of Spain, following the province’s establishment in 1856 during the Spanish colonial period. It was formed from parts of Cagayan and Nueva Vizcaya as a new administrative unit in the Cagayan Valley, in line with the practice of naming territories after members of the Spanish monarchy.

Queen Isabella II ruled Spain from 1833 to 1868. She became queen at a young age, and her reign was marked by political instability, including internal conflicts and frequent changes in government. Although she never visited the Philippines, her authority extended to Spanish colonies, and several places were named after her during her reign, including Isabela.

This historical connection is reflected in Queen Isabella II Park in Ilagan City, completed in 2014. At the center stands a 17-foot statue of the queen, created by local artist Joel Paragas. The monument marks the origin of the province’s name within a modern setting.

The base of the structure adds context to the province’s own story. Surrounding figures portray former leaders, heroes, local legends, and ordinary people, presenting a broader view of Isabela’s history. These elements place emphasis on the people who contributed to the province’s development.