In 1648 Vladislas died, and was succeeded on the Polish throne by John Casimir, who, having to fight with Charles of Sweden, and other European powers, found it necessary to secure the neutrality of Russia; he was, therefore, obliged to banish Demetrius. The unfortunate man at first took refuge in Revel, in the little republic of Livonia. The magistrates and principal citizens received him with regal honours, but, on their refusal to deliver him up to the Czar, were threatened by that potentate with war. Reluctantly his hosts were compelled to request their luckless guest to seek another asylum, but on his departure they made him handsome presents, and had him safely and honourably escorted to the seaport of Riga. The innocent impostor, as he has been termed, now made his way to Sweden, but political reasons drove him quickly thence, and he next sought safety with the Duke of Holstein Gottorp. He met with a friendly reception, but the fates had timed his visit at a most inopportune moment. The Duke had recently negotiated a treaty of commerce with the Czar, and while engaged on the embassy, Eurchmann, one of his envoys, had pledged his master's credit, without his authority, for a large sum of money, variously stated at one hundred thousand and three hundred thousand crowns; for which misdeed, upon his return to Holstein, he was decapitated. The Duke was, or appeared to be, in a state of embarrassment as to the liquidation of the debt, when a Russian agent, who was residing at Lubeck, and knew the value of the claimant to the Russian Czar, opened negotiations with Holstein's ruler, and, pretending to the only too willing prince that his guest was merely a common impostor, arranged for his delivery to Alexis in exchange for the receipts of the money brought away and owed for by his envoy. This is the common account of the nefarious transaction, but in all probability the whole affair had been previously arranged between the two sovereigns, and Eurchmann and Demetrius were the victims of the royal plot. Be the truth what it may, suffices to say that the Duke of Holstein seized Demetrius, and delivered him up to the Russians sent to receive him, obtaining in return the bills for the money owing. The unfortunate man was hurried on board a vessel, transported to the Russian coast, and taken thence by rapid stages to Moscow. Directly he arrived in the metropolis the captive had a wooden gag forced into his mouth to prevent him speaking, and was confronted by an old woman, bribed for the purpose, who declared herself to be his mother, and upbraided him for unnatural ingratitude to her, and his presumption in disowning his parent; finally, desiring him to avow his misdeeds, and not to let her endure the misery of beholding him executed for his imposture.