Analysis of information sources in references of the Wikipedia article "Russian Blue" in Simple English language version.
Many believe the Russian Blue is a natural breed originating from the Archangel Isles in northern Russia, where the long winters developed a cat with a dense, plush coat. Rumors also abound that the Russian Blue breed descended from the cats kept by the Russian Czars, which was rumoured to hunt the brown bear. Assuming the Russian Blue did migrate from northern Russia, it was likely via ship to Great Britain and northern Europe in the mid 1860s.
Many believe the Russian Blue is a natural breed originating from the Archangel Isles in northern Russia, where the long winters developed a cat with a dense, plush coat. Rumors also abound that the Russian Blue breed descended from the cats kept by the Russian Czars, which was rumoured to hunt the brown bear. Assuming the Russian Blue did migrate from northern Russia, it was likely via ship to Great Britain and northern Europe in the mid 1860s.