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Creation by Royal Decree

When
1 May 1856
Where
Cagayan Valley
Part of
Province of Isabela created in the Philippines

A royal decree issued on May 1, 1856, established the Province of Isabela to support missionary efforts in the Cagayan Valley.

The decree detached several towns from the Province of Nueva Vizcaya, including Gamu, Old Angadanan, Bindang, Camarag, Carig, and Palanan. Additionally, Cabagan and Tumauini were taken from the Province of Cagayan to form the new administrative unit.

Sources

  1. Isabela (province) Wikipedia, revision of 2026-10-06

Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.