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Person PER-000297

Johanna Martens

1679 – 1734 · Martens line

Connection to the Koup

Married into a household on this ground: Johannes "Jan" Oosthuijsz (stamvader) (1702~).

Names

Baptismal name
Johanna
Called
Jannetje
Given
Johanna
Surname
Martens

The formal baptismal name and the name a person was actually called are both kept, and neither is derived from the other. Spelling drift between records is evidence, not noise.

Immediate family

Married
Johannes "Jan" Oosthuijsz (stamvader) about 1702
Children

A life in the record

  1. 1679 born Born
  2. about 1702 married Married Johannes "Jan" Oosthuijsz (stamvader)
  3. 1713 event Two Oosthuizen daughters die in the smallpox year
    [SRC-074] Barbara, five, and Jannetje, three, both die in 1713 - the year the smallpox epidemic brought ashore on a Company fleet killed roughly a quarter of the colony's people and devastated the Khoi far worse. The family loses two of its nine children in one year. Cause is inferred from the date
  4. 22 November 1722 event Jacobus Oosthuysen baptised, with a single witness
    [SRC-094] "Jacobus, Zoon van JAN OOSTHUIJSEN en JANNETJE MARTENS. Getuijge SUSANNA GARDE." THE OLDEST ORIGINAL DOCUMENT IN THE PROJECT, and the deepest verified point on the Oosthuizen line. One witness, where his grandson's 1786 baptism would have seven - the family's network in the colony was stil
  5. 22 November 1722 occasion Baptism of their child, Jacobus Oosthuizen (b.1722) at Drakenstein [TO VERIFY]
  6. 1734 died Died

Stories

What we don't know

A sourced gap beats an unsourced fill. These are the open questions on this person, stated rather than papered over.

Sources

  1. FamilySearch Family Tree - Oosthuizen direct line FamilySearchperson pages 972X-2LJ, LZ1Q-GDF, LDQC-R1B, LDQC-R17, LDQC-RTX and their family views
  2. Baptism 22 November 1722: Jacobus, son of Jan Oosthuysen and Jannetje Martens FamilySearch, "South Africa, Dutch Reformed Church Registers (Cape Town Archives), 1660-1994"; State Archives, Cape Provinceark 3:1:3Q9M-CSV8-W944-B; cc=1478678; register pages 59-60, ANNO 1722

Research notes

DIRECT ANCESTOR - Frans's 7x-GREAT-grandmother, and the stammoeder. [SRC-094] The 1722 register writes her JANNETJE MARTENS. DATES CONFLICT: Frans's tree has her born 5 August 1673 and dying 1738; FamilySearch has 1679-1734. The 1946 armorial entry [SRC-097] says she came from GRYPSKERK IN GRONINGEN - which matters, because the tree separately attaches a GRIJPSKERKE IN ZEELAND to a supposed father-in-law (PER-000319), and two villages of nearly the same name in different provinces is precisely the confusion this project is built to catch. [TO VERIFY] MARRIAGE: about 1700 / about 1702 / 1703 depending on the source; a son baptised 23 December 1702 caps it at 1702. NAMING TEST: her second son MARTINUS and her third daughter JANNETJE place her own father as MAARTEN - which her patronymic surname MAARTENS already says - and her mother as ANNA, from the first daughter. A small independent confirmation that this family used the pattern strictly, which is what licenses the same test on her husband's side.

[31 Jul 2026] MERGED PER-000766 into this row. PROVEN DUPLICATE, resolved on the FamilySearch id. Both rows carry LV83-7N1; an FS id names one person, so these are one person recorded twice. Created by the 31 Jul 2026 one-degree tree pull, which matched on tree id alone - and 255 model people carry no tree id, so any of them one hop from a tree-linked person was added again. Survivor is the pre-existing row; it carries the prose, sources and land links. Moved across: tree id=. DISAGREEMENTS, kept rather than resolved - the FamilySearch id settles these in one click: display_name: kept 'Johanna MartensH', PER-000766 said 'Johanna Jannetie Maartens'; birth_edtf: kept '1679', PER-000766 said '1673-08-05'; death_edtf: kept '1734', PER-000766 said '1738'.

These are working notes, not finished prose: they carry the reasoning, the corrections and the things still marked to verify. They are kept here so the page itself can read as what is known.

Open questions

Elders

FamilySearch profile LV83-7N1