Daniel du Plessis

Superseded: answered below *** THE ROW LEAD-0272 WAS ASKING FOR. *** Second great-grandfather of Cecilia Maria du Plessis, and a near-exact contemporary of MARTHA DU PLESSIS (PER-000750, 1730-1796), who married Petrus VenterM in 1753 and is the grandmother of the root matriarch. Born two years apart, died a year apart. WHETHER THEY ARE BROTHER AND SISTER IS NOT ESTABLISHED and neither has a recorded parent here.

[FS] Added 23 Aug 2026 from a FamilySearch fan chart of Cecilia Maria du Plessis supplied by Frans. Thin record: name, dates and the line only. NO PLACE IMPORTED - the tree's place strings are systematically wrong and are not evidence. NO FamilySearch id captured, because the chart does not show them; that is a gap worth closing, since 10 makes the FS id the citation.

Superseded: answered below *** [23 Aug 2026] TESTED AND THE ANSWER IS NO. *** FamilySearch gives Daniel du PlessisH (LC5W-J51) the parents CHARL PRIEUR DU PLESSIS (1688-1736) and CECILIA VAN MAARSEVEEN (1692-1762), married at Stellenbosch on 12 June 1712, and lists their THIRTEEN children in full: Charl 1716, Pieter 1716, Elizabeth 1716, Magdalena 1717, Johannes Jean 1720, Elisabeth 1722, Catharina 1723, Charel 1724, Philippus 1727, Jacob 1730, DANIEL 1732, Jacobus 1734, Anna Magdalena 1736. *** THERE IS NO MARTHA. *** The 1730 place in that sequence is Jacob, and the list runs to its end rather than being truncated. So Daniel and Martha du PlessisM are NOT brother and sister on this evidence, and the near-identical dates were the coincidence LEAD-0272 warned they might be. A well-populated sibship with a date and an id on every child is not absolute proof of an absence, but it is close, and the burden now sits the other way.

*** [23 Aug 2026, CORRECTING THE SAME DAY'S OWN CONCLUSION] MARTHA DU PLESSIS AND DANIEL DU PLESSIS ARE FIRST COUSINS. *** Martha's father is JEAN LOUIS DU PLESSIS (PER-001909, 1691-1768) and Daniel's is CHARL PRIEUR DU PLESSIS (PER-001903, 1688-1736), and both are sons of JEAN PRIEUR DU PLESSIS (PER-001905, 1638-1708) and MARIE MADELEINE MENANTEAU (PER-001906).

SO THE SHARED ANCESTOR IS REAL AND THE COINCIDENCE DID NOT DISSOLVE. Jean Prieur du PlessisM is the 4x-great-grandfather of CECILIA MARIA DU PLESSIS, who died on Rondabel in 1895, and the 2x-great-grandfather of ADRIANA CECILIA VENTER, the root matriarch, and of MARIA CATHARINA VENTER, who held Rondabel by 1829.

Superseded: answered below WHAT WENT WRONG IN THE TEST: LEAD-0272 asked whether Martha and Daniel were SIBLINGS, FamilySearch's sibling list for Charl Prieur's children correctly contained no Martha, and that correct answer was read as closing the question. It closed one relationship and left the obvious next one untested. A negative result is only as wide as the question asked of it.

*** [23 Aug 2026] AND THE SHARED-ANCESTOR CLAIM IS WEAKER THAN IT LOOKS. *** JEAN PRIEUR DU PLESSIS IS THE DU PLESSIS STAMVADER AT THE CAPE, so nearly every du Plessis here descends from him and 'they share Jean Prieur' says little more than 'they are both du Plessis'. What survives is the narrow fact: MARTHA AND DANIEL ARE FIRST COUSINS, their fathers being brothers. Four to six generations back is background, not connection. LEAD-0272.