Subsequently Juan Manuel Rosas, dictator of Buenos Aires, interfered in the intestine quarrels of Uruguay; and Montevideo was besieged by his forces, allied with the native partisans of General Oribe, for nine years (1843-52).
Having no male issue, she chose as her successor the infant son of her niece, Anna Leopoldovna, duchess of Brunswick, and at her death the child was duly proclaimed emperor, under the name of Ivan VI., but in little more than a year he was dethroned by the partisans of the Princess Elizabeth, a daughter of Peter the Great and Catherine I.
Henry Percy (Hotspur) and his father, the earl of Northumberland, thought their services ill-requited, and finally made common cause with the partisans of Mortimer and the Welsh.
He further complained of the ill-treatment to which his friends and partisans had been subjected during his absence.
The Senate, in which the partisans of the ministry had been increased by numerous appointments ad hoc, finally set the seal of its approval upon the measure.