Landlord of Nasierowo
Andrew from Nasierowo was mentioned as Nasierowo landlord in Volume 3 of Metryka Koronna – registry of Mazovian Prince Janusz Starszy (1414-1425) Register.
Metryka Koronna was a document in which Prince administration confirmed (i.e):
- granted lands and rights given to the landlords,
- legal acts of the Prince,
- real estate sales and real estate exchange.
The entries to the Metryka Koronna are very specific and short called “regest” (the term regest means record of local authority). Andrew from Nasierowo was mentioned few times in the registry :
Mikołaj from Zator sold parish in Zator, the Prince village [Zatory, Poland] to the Andrew from Nasierowo [Ciechanowskie, Poland] for 60 (gr – groszy) monetary units  k. 6v
Andrew from Nasierowo exchanged the mayor office in Prince village, Zator, with surcharge of 10 monterary units for real estate of Borzym from Rzeczki [Rzeczki, Chiechanowskie]. k. 16
Sedziwoj from Nasierowo [Ciechanów district] sold Andrew from Nasierowo his real estate in Nasierowo and Chrzecin [Ciechanów district] for 20 montetary units (kopy groszy), 13 XI 1422. k. 93v
Sedek [Sedziwoj] from Nasierowo [Ciechanów district] the sixth part of his heritage in Chrzciecin [Ciechanów district], which his father bought from Galazek landlords [Nowomiejski?, district], sold to Andrew the successor from Nasierowo. . k. 117v
Before 1424 Prince [Janusz I Starszy] granted to the Nasierowski family from Nasierowo in Ciechanow District 30 włók (medieval real estate measurement unit) near Trzabka, which in 1424 Wojciech, Jan i Mscislaw from Nasierowo sold to Andrew from Nasierowo, and then Andrew sold real estate in 1437 to Mikolaj from Jastrzebski family – coat of arms Bujno**.
Andrew from Nasierowo [Ciechanowski district] sold his real property in Rzeczki [Rzeczki, ciechanowski district] to Peter from Rzeczki (known as Czelejewic) for 70 monetary units (grosze praskie) k. 37v
Landlords from Nasierowo [Ciechanow district] sold 30 włók at the river Jastrzebiec in Lomza districtd [Jastrzabka, Lomza district] to the Andrew from Nasierowo for 32 monetary units (kopy gr posp.) Zambrowo 19 X 1424 k. 38v
Real estate exchange of N. from Nasierowo in Ciechanow district with surcharge of other landlords k. 38v
Regesty zapisek najstarszego rejestru kancelarii ks. Janusza I (1414-1426), w opracowaniu: K. Chłapowski, M.Jesiotr, K., A.Salina, H.Wajs (Archiwum Główne Akt Dawnych, Metryka Koronna, sygn. MK3)
 Jerzy Wiśniewski, Początek i rozwój nowego osadnictwa w ziemi łomżyńskiej w końcu XIV i w XV wieku.
** Bujno Coat of Arms is other name of Slepowron Coat of Arms