Geertruyd Jacobs in entry for Jacobus, "Netherlands, Archival Indexes, Miscellaneous Records"
"Nederland, Indexen van de Archieven, Primaire Archiefstukken (BS en DTB), 1600-2000," database,
FamilySearch (
https://familysearch.org/ark:/61903/1:1:QL6Q-6TLK : 23 August 2017), Geertruyd Jacobs in entry for Jacobus, Baptism 17 Mar 1690, 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.