Vironian

The Vironians (Estonian: Virulased) were one of the Finnic tribes that later formed the Estonian nation.

They lived in Vironia (Virumaa in Estonian, Wierland in German and Virland in Scandinavian, now Ida-Viru County and Lääne-Viru County of Estonia). Vironians were divided into five clans (kilikunda), Maum (in Estonian "Mahu"), Laemund (Lemmu) also known as Pudiviru, Askele, Revele (Rebala), Alentagh (Alutaguse). They built many strongholds, like Tarwanpe (modern Rakvere) and Agelinde (now Punamägi Hill in Äntu village).

Like other Estonian tribes, Vironians remained predominantly pagan before Northern Crusades in the 13th century. According to the Chronicle of Henry of Livonia, Vironians believed that Tharapita, a god worshipped by Osilians (the tribe inhabiting Saaremaa) was born in Vironia. However, Vironian elder Thabelin of Pudiviru had endorsed Christianity before the German and Danish crusaders reached Estonia. Thabelin (Tabellinus) was baptized by Germans in Gotland island. Later, when competing Danish crusaders arrived in Vironia, Thabelin was suspected of being too pro-German and was hanged.

In 1219, the German crusaders of the Livonian Brothers of the Sword made a raid against Vironians together with recently christened Letts, Livonians, and several proto-Estonian tribes (Sakalians, Ugaunians and Jervians). After five days of killing and pillaging, Kyriavan, Thabelin and other Vironian elders asked for a truce. According to the chronicle, Kyriavan told he had a "very bad god" before and therefore was ready to accept the Christian god. After truce was made, Vironian elders accepted Christianity. Some sons of elders from all five Vironian clans were taken hostages by the crusaders as part of the truce.

...
Wikipedia