From WikiPilipinas: The Hip 'n Free Philippine Encyclopedia
The term Maharlika refers to the "non-chief" class, below the rajas and datus in the precolonial Philippines. They are the warrior class, devoted to do military service for the datu's sakop or barrio. Just like those from the timawa class, the maharlika need not to pay tibute. They had to serve the datu whenever the latter needs them. During battles and feuds, the maharlika from other barangays work hand-in-hand to defeat their opponents.
In the Northern Philippines, the maharlikas are called menggal, while in the southern islands, they are known as bagani.
- Arcilla, Jose S. Kasaysayan Vol. II - The Spanish Conquest. Philippines: Asia Publishing Company Limited, 1998.