The families of Nassau and Croi (to the latter belonged the Duke of Arschot) had for several reigns been competitors for influence and honor, and their rivalry had kept up an old feud between their families, which religious differences finally made irreconcilable. The house of Croi from time immemorial had been renowned for its devout and strict observance of papistic rites and ceremonies; the Counts of Nassau had gone over to the new sect--sufficient reasons why Philip of Croi, Duke of Arschot, should prefer a party which placed him the most decidedly in opposition to the Prince of Orange. The court did not fail to take advantage of this private feud, and to oppose so important an enemy to the increasing influence of the house of Nassau in the republic. The Counts Mansfeld and Megen had till lately been the confidential friends of Count Egmont. In common with him they had raised their voice against the minister, had joined him in resisting the Inquisition and the edicts, and had hitherto held with him as far as honor and duty would permit. But at these limits the three friends now separated. Egmont's unsuspecting virtue incessantly hurried him forwards on the road to ruin; Mansfeld and Megen, admonished of the danger, began in good time to think of a safe retreat. There still exist letters which were interchanged between the Counts Egmont and Mansfeld, and which, although written at a later period, give us a true picture of their former friendship. "If," replied Count Mansfeld to his friend, who in an amicable manner had reproved him for his defection to the king, "if formerly I was of opinion that the general good made the abolition of the Inquisition, the mitigation of the edicts, and the removal of the Cardinal Granvella necessary, the king has now acquiesced in this wish and removed the cause of complaint. We have already done too much against the majesty of the sovereign and the authority of the church; it is high time for us to turn, if we would wish to meet the king, when he comes, with open brow and without anxiety. As regards my own person, I do not dread his vengeance; with confident courage I would at his first summons present myself in Spain, and boldly abide my sentence from his justice and goodness. I do not say this as if I doubted whether Count Egrnont can assert the same, but he will act prudently in looking more to his own safety, and in removing suspicion from his actions. If I hear," he says, in conclusion, "that he has allowed my admonitions to have their due weight, our friendship continues; if not, I feel myself in that case strong enough to sacrifice all human ties to my duty and to honor."