Ruthenia is an exonym, originally used in Medieval Latin, as one of several terms for Rus'. The ethnonym Ruthenians was used to refer to the East Slavic and Eastern Orthodox people of the Grand Duchy
Ruthenian lion, which was used as a representative coat of arms of Ruthenia during the Council of Constance in the 15th century
Kievan Rus', also known as Kyivan Rus', was the first East Slavic state and, later, an amalgam of principalities, in Eastern Europe from the late 9th to the mid-13th century. Encompassing a variety of
Ruthenia
…Ruthenia is an exonym, originally used in Medieval Latin, as one of several terms for Rus'. The ethnonym Ruthenians was used to refer to the East Slavic and Eastern Orthodox people of the Grand Duchy of Lithuania and the Kingdom of Poland…
The Invitation of the Varangians by Viktor Vasnetsov: Rurik and his brothers Sineus and Truvor arrive at the lands of the Ilmen Slavs.
East-Slavic tribes and peoples, 8th–9th centuries
Rus' under the walls of Constantinople (860), the Radziwiłł Chronicle
Princess Olga's avenge to the Drevlians, Radziwiłł Chronicle