Имерина
The Andriana strata originally constituted the nobility, warrior, and land owning class of the Merina society. They were endogamous and their privileges were institutionally preserved. While the term and concept of Andriana is studied with the Merina people of Madagascar, the term is not limited to them. The use of the word "Andriana" to denote nobility occurs among numerous other Malagasy ethnic groups such as the Betsileo, the Betsimisaraka, the Tsimihety, the Bezanozano, the Antambahoaka and the Antemoro. "Andriana" often traditionally formed part of the names of Malagasy kings, princes, and nobles. Linguistic evidence suggests its origin is traceable back to an ancient Javanese nobility title, although alternate theories have been proposed.