Klaas Nap en tant qu·Äôentrâ©e de Trijntje Nap, "Pays-Bas, Index d·Äôarchives, Registres d·Äôâ©tat civil, 1600-2000"
"Nederland, Indexen van de Archieven, Primaire Archiefstukken (BS en DTB), 1600-2000," database,
FamilySearch (
https://familysearch.org/ark:/61903/1:1:QLM2-VFQV : 22 August 2017), Klaas Nap in entry for Trijntje Nap, Death 03 Jan 1826, Graft, Noord-Holland, Netherlands; from database,
openarchives (https://www.openarch.nl : 2016); citing Graft, inventory number , record number 2; ; Noord-Hollands Archief.