> i remember seeing some documents  as you know russian tsardom was landlocked for a long time by poland and lithuania with sweden/denmark/livonia at the north. direct contacts with western europe were not a thing until england found a seaway into arkhangelsk. so most of the info about our medieval state was perceived by them through prism of polish view, with it's propaganda of course, who saw us as direct competitor over land of rus. psheks poisoned the well long before russia became big and got full access to baltic sea. so i wouldn't be surprised to know what some traders just copied the naming they heard from the two said countries above.
Russian Federation