Geertruyd Jacobs en tant qu·Äôentrâ©e de Joanna, "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:QL6Q-9KR8 : 23 August 2017), Geertruyd Jacobs in entry for Joanna, Baptism 22 Feb 1688, Leiden, Zuid-Holland, Nederland; from database,
openarchives (https://www.openarch.nl : 2016); citing Archiefnaam: DTB, Deel: 295, Periode: 1670-1802, archive 1004, inventory number 295, folio; Archiefnaam: DTB, Deel: 295, Periode: 1670-1802; Erfgoed Leiden.