Pieternella van Loon en tant qu·Äôentrâ©e de Cornelis Tromp, "Netherlands, Archival Indexes, Vital Records, 1600-2000"
"Nederland, Indexen van de Archieven, Primaire Archiefstukken (BS en DTB), 1600-2000," database,
FamilySearch (
https://familysearch.org/ark:/61903/1:1:QL4X-B2C3 : 22 August 2017), Pieternella van Loon in entry for Cornelis Tromp, Birth 27 Jan 1817, Asperen, Zuid-Holland, Nederland; from database,
openarchives (https://www.openarch.nl : 2016); citing Asperen, archive 0207, inventory number 33800, record number 3; Asperen; Gelders Archief.