Cum autem Ottocari huius et Kynixbergae mentio facta sit, operae pretium est Aeneae Sylvii errorem, quem nonnulli alii scriptores secuti sunt, redarguere, qui Ottocarum hunc omnes eas regiones, quae inter Boemiam et mare Baltheum sunt, imperio suo subiecisse, devictisque Tartaris Kynixbergam arcem et oppidum in Prussia condidisse scribit.
Again, as I've asked before, a relative clause of characteristic within an AcI clause ought, classically speaking, to take the subjunctive, but it's not always so in later authors?