Method
What the labels mean, and who is missing
Every claim here carries a confidence and a source. The point of labelling is that a reader can overturn the reasoning without having to take the conclusion on trust.
The labels
| Label | Means |
|---|---|
| Documented | A named source with a reference, and where possible the scan. The Gedenkbuch entries, the marriage certificate number, the deportation dates. |
| Inferred | A reasoned conclusion from documented facts, with the reasoning written out so it can be attacked. The paternity finding is here. It stayed here through the Y-DNA result of 14 September 2026 — which corroborated it rather than overturning it — because a conclusion does not become Documented by surviving a test. It becomes Documented when there is a document. |
| Disputed | Asserted in the family record and contradicted by what can be seen. Georg Leibholz as a brother; the February 1948 marriage date. |
| Unproven | Kept because it may matter later, but carrying no weight now. The hundred-odd surname-index Luwinskis. |
Living people
Living people are omitted from this build entirely — not hidden, not gated, not present in the output. 10 people were removed on that ground before this site was generated.
One exception, and only one. Lynn Derrick Luwinski is named, with his birth year and his parents, and nothing else — no occupation, no address, no photograph, no descendants. An archive about a man's ancestry that would not say whose ancestry it was would be useless; an archive that published him would be a different kind of failure.
Where the source flags someone as living but they were born in 1920 or earlier, and so would now be 106 or more, they are presumed dead and published with the absence of a death record stated plainly. Several of those are Holocaust-era people whose fate was never recorded. Saying so is the entry's purpose.
A removal request is honoured within days, without argument and without requiring a reason.
Two rules for this particular family
On the Holocaust records. Dates and places come from the Bundesarchiv and are quoted as the Bundesarchiv gives them, including its refusals: where it declines to state a date of death because the date is not certain, this archive declines too, and says why. Jacob Leibholz has no death date here. That is not an omission.
On the paternity. It is stated, because burying a documented inconsistency in a private file would make the rest of the archive worth less. It is labelled as an inference, the arithmetic is shown, and the tests that would overturn it are listed. DNA match holders are living people and are not named.
Corrections to the source
Where a named source overrides the family record, the correction is applied to the register and listed here with the evidence. Nothing is silently rewritten — the original value is carried through as was, so a reader can always see what the family believed and why this archive disagrees.
| Who | Field | Was | Now | On what evidence |
|---|---|---|---|---|
| Kurt Israel Luwinski | died | Dec 15 1969 | 15 December 1968 | Johannesburg Chevrah Kadisha burial register: died 15.12.1968, buried 16.12.1968, Westpark block L grave 211, Yahrzeit 24 Kislev 5729 — which is itself 15 December 1968. |
| Jacob Leibholz | died | 1945 | not documented; deported to Auschwitz 26 February 1943 | Bundesarchiv Gedenkbuch en1100957, which records the deportation and deliberately gives no date of death. |
| Morris Isaac Salkow | died | Nov 9 1991 | 8 November 1991 | Johannesburg Chevrah Kadisha burial register: died 08.11.1991, buried 10.11.1991, Westpark block U grave 2469. |
| Gertrud Leibke | husband | Georg Leibholz | Oskar Leibholz | Census of 17 May 1939 via Mapping the Lives: Gertrud and Oskar share an address, Waghäuseler Str. 9/10 Wilmersdorf. Georg was at Michaelkirchstr. 26, Mitte, with Lydia née Perl. |
| Georg Leibholz | brother of Jacob | son of Sally Leibholz and Friederike Schmul | disputed — a different Leibholz family | Born Hammerstein, West Prussia, 7 June 1884; Jacob born Schubin, Posen, 8 August 1884. Two months and two hundred kilometres apart. |
| Ivone Mota Figueiredo | marriage to Unknown Da Rocha, before 1941 | married | NO SUCH MARRIAGE — she was a spinster in February 1948 | Duplicate Original Marriage Register, Germiston no. 34 of 1948, 2 February 1948, column 5 Personal Status: SPINSTER. Henrique, born 11 March 1941, was therefore born to an unmarried mother of sixteen. |
| Kurt Israel Luwinski | occupation | dress designer | dress designer (1933); shop keeper (1948) | Johannesburg marriage register no. 858 of 1948, column 6: Shop Keeper. The 1933 emigration record gives dress designer. Both are true of one man. |
Duplicate records in the source
The tree holds five people twice. Each pair shares an identical birth and death date, so these are not two people with one name — they are one person entered twice, usually once with parents attached and once without. They are collapsed here to the fuller copy, and listed so the collapse can be checked or reversed.
| Person | Dropped | Kept |
|---|---|---|
| Gertrud Leibke (Leibholz) | 9500145 | 9500104 |
| Georg Leibholz | 9500151 | 9500026 |
| Julius Leibke | 9500148 | 9500152 |
| Henriette Katz (Leibke) | 9500149 | 9500153 |
| Leopold Leibke | 9500150 | 9500154 |
One of these mattered. The dateless copy of Leopold Leibke was the only record in the whole tree flagged as a living person without a birth year — while the fuller copy of the same man records his death in 1932. The build's living-persons check caught it, which is what the check is for.
One living person is named, and that is all that is published about him
Ten living people are omitted from this archive entirely. The eleventh — Lynn Derrick Luwinski — is named, because the archive is about his ancestry and cannot be written without saying whose it is.
Named is the whole of it. No birth date, and — since 14 September 2026 — no birth year either. A year is a date of birth with the precision filed off, and paired with a full name it is the half of an identity that is worth stealing. It was removed from the pages, from the generated register, and from the builder that writes the register, so that a rebuild cannot quietly restore it.
Facts that gave the year away by arithmetic went with it: his age at his father's death, his age when the first divorce action was filed, the interval between the wedding and the birth. The events are still here — a child was born, and it was after the wedding — because they carry the argument. The dates attached to him are not, because they carried nothing but him.
A false claim of kinship, caught before it was sent Corrected
A request for Ivone's Porto death record had been drafted months ago and never sent. Read again before sending on 15 September 2026, it contained the line “sou neto dela” — I am her grandson.
It is not true. Ivone's son is Derrick. The researcher is the son of Derrick's former wife by her second marriage, and is no relation to Ivone at all — a fact his own DNA test states plainly, his father being that second husband. The sentence would have put a false statement of relationship in front of a government registry.
It was also unnecessary. A Portuguese certidão de óbito is a public document and needs no claim of kinship at all. The line now says only that the purpose is genealogical and non-commercial. Check who you are claiming to be before you claim it — an archive that writes to registries under a borrowed relationship is worth nothing, however good its intentions.
The source
The spine is a MyHeritage family tree of 164 people, read on 14 September 2026. It is a family record, not an archive: it carries real documents, real citations, family estimates and at least two duplicated individuals, all mixed together at the same apparent confidence. Separating those is most of the work here. Where this archive contradicts the tree — Jacob's death year, Georg's parentage, the February 1948 marriage — the contradiction is set out with its evidence rather than quietly corrected.