EN
The article presents the correspondence of the members of the Radziwiłł family from the Birżai line, based mainly on the manuscripts from the National Library in Warsaw (ref. no. III 3277). The letters of Krzysztof Radziwiłł’s (1585-1640) closest relatives: his sister Elżbieta, his wife Anna, his daughter Katarzyna and his granddaughter Anna Maria contain some typical elements – questions about health, expressions of godliness and longing, and feelings towards the addressees. The analysed epistolary texts are mostly edited in a conventional way, although Anna Maria uses quotes, jokes, biblical allusions. Hand-written letters express mainly emotions, containing little information about public matters. They focus above all on the private life.