Following the example of the Tomuleţ family dossier, the author discusses the issue of the dossiers of the Bessarabian noble families as an important source of documentary heritage in studying the noble origin of the people who were to regain the noble status held until 1812. The author notes that the dossiers of the noble families offer the possibility to establish the kinship ties these families had with the noble families from Moldova from the previous centuries, thereby confirming or denying their affiliation to the nobility; the dossiers serve as an important source in the study of the landed property of the Bessarabian nobility, because, in their requests, the nobles had to indicate the estates they owned (either they or their ancestors) until the annexation of this territory to Russia; they serve as an important source in the study of the genealogical tree of noble families, because the Bessarabian landlords were to confirm their nobility by old documents, signed by the officials, which they were to present, as a rule, in the original; the dossiers contain important data regarding the studies that the nobles received during the XIX century and serve as an important source in reflecting the basic stages of the struggle of the Bessarabian nobility for the recovery or confirmation of their noble titles.