 Ramba uchinyora ndima iyi - Nyika dzacho dzaigarwa norudzi rweBaltic rwevaYotvingians. Nemhaka yokurwiswa uye kupambwa kwaiitwa neTeutonic Order, vaYotvingi vakasiya nyika yacho uye Seirijai yakava renje. Kubva muna 1383 kusvika muna 1398 Seirijai yaiva muNyika yeTeutonic Order. Pashure pokukundwa kweTeutonic Order muHondo yeGrunwald uye Chibvumirano cheMelno 1422, nyika yakava nevanhu zvakare uye yakatanga kukura mune zveupfumi. Kubvira muzana ramakore rechi 16 Serijai yaizivikanwa senyika yomutongi. Mambo wePoland naGreat Duke weLithuania Sigismund I Mukuru vakapa Seirijai kuna Jurgis Radvila, uye gare gare yakava pfuma yemhuri yaRadvila. Jurgis Radvila akavaka chechi yeKaturike muna 1537. Nechekare muna 1564 chechi yacho yakapiwa vaCalvin, sezvo vakawanda mumhuri yaRadvila vakatendeukira kuchiCalvin. Makakatanwa pakati pavaKaturike navaCalvinist akapfuurira kutozosvikira muna 1655 Hondo Yamakore Gumi NamatatuneRussia. Guta reSeirijai rakaparadzwa uye vaCalvinist vakadzokera shure. 