Wikipedia
King Andrianjafy (1770–1787) also known as Andrianjafinandriamanitra and Andrianjafinjanahary, was the king of Imerina Avaradrano, the northern part of the central highlands of Madagascar with its capital at Ambohimanga. His father Andriambelomasina bequeathed him the rule of Avaradrano while designating his nephew Ramboasalama to follow Andrianjafy in the order of succession. Andrianjafy did not accept this decree, instead preferring that his own son succeed him, and sought retribution against citizens of Avaradrano who acknowledged the latent authority of his nephew.
In order to prevent Ramboasalama from rising to power, Andrianjafy devised a series of failed plans to kill his nephew. The king's ineffectiveness as a ruler and despotic behavior contributed to declining popularity among the people of Avaradrano. Popular support for Ramboasalama produced a coup d'état in which he replaced Andrianjafy as King Andrianampoinimerina. Andrianjafy fled to Ilafy, where he rallied an army and tried unsuccessfully to recapture the throne. He was put to death in 1787 by followers of Andrianampoinimerina.