The line of Imereti, incessantly embroiled in civil war, continued with many breaks in succession, and the kingdom was only relatively spared from the encroachments of its Ottoman suzerains, while Kartli and Kakheti were similarly subjected to its Persian overlords, whose efforts to annihilate the fractious vassal kingdoms were in vain, and the two eastern Georgian monarchies, survived to be reunified in 1762 under King Erekle II, who united in his person both the Kakhetian and Kartlian lines, the latter surviving in male descent in the branch of Mukhraneli since 1658.