Kammala wannan jumla: An katse aikinsa na fastoci da ilimi ta hanyar
Tashin hankali na 1863 <unk> 1864 kuma ya zama mai matukar wahala yayin da gwamnatin Rasha ta tsaurara matakanta bayan faduwar tawayen. Duk da haka waɗannan yanayin ba su hana shi bin tafarkin da ba zai iya kawo shi cikin rikici kai tsaye da hukumomi ba. Ya yi duk wani kokari don rushe shirin gwamnati na Russification. A cikin 1874 Valančius ya kamu da rashin lafiya kuma ya mutu a Kaunas a ranar 29 ga Mayu, 1875. An binne shi a cikin crypt na Kaunas Cathedral Basilica.