At around the same time, Cynane, Alexander's half-sister, arranged for her daughter, Eurydice II, to marry the joint king, Arridaeus (Philip III). Fearful of Cynane's influence, Perdiccas ordered his brother Alcetas to murder her. The discontent expressed by the army at the plan to murder her and their respect for Eurydice as a member of royal family persuaded Perdiccas not only to spare her life but to approve of the marriage to Philip III. Despite the marriage, Perdiccas continued to firmly hold control over the affairs of the royal family.