Learchus (regicide) and Critola, feared for his life, and wouldn’t allow Polyarchus to travel alone, finally journeying with him. During the reign of Battus III, Battus realized the instability of his kingdom and brought in a lawgiver named Demonax to reform the government. Demonax's reforms were disregarded by the successor to Battus, Arcesilaus III, who instigated yet another period of civil strife. On the deaths of Amasis II and Arcesilaus III, both states went under the thumb of Persian rule. Learchus (regicide) Learchus () was an adviser in the government of the Kingdom of Cyrenaica during the reign of king Arcesilaus II.
Regicide killed in battle by their subjects (for example Richard III), but none of these deaths are usually referred to as regicide. The word regicide seems to have come into popular use among foreign Catholics when Pope Sixtus V renewed the papal bull of excommunication against the "crowned regicide" Queen Elizabeth I, for—among other things—executing Mary, Queen of Scots, in 1587. Elizabeth had originally been excommunicated by Pope Pius V, in "Regnans in Excelsis", for converting England to Protestantism after the reign of Mary I of England. The defeat of the Spanish Armada and the "Protestant Wind" convinced most English people