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Tariq Abdul Aziz: should a two-word surname like Abdul Aziz stay whole after the given name? #694

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@derek73

What happens today. A bound given-name word (rules.md#P5) joins the word after it only at the start of the name. Later in the name it is read as a middle name, in Latin script and native script alike:

Abdul Aziz Tariq       →  given 'Abdul Aziz', family 'Tariq'
Tariq Abdul Aziz       →  given 'Tariq', middle 'Abdul', family 'Aziz'
طارق عبد العزيز        →  given 'طارق', middle 'عبد', family 'العزيز'

Evidence. The native-script Wikidata corpus (#693) holds 150 real Arabic names that align. Every disagreement among them is this one shape, a two-word family name split across middle and family: 7 names, keyed in tools/differential/wikidata_native_agreement.json.

  • طارق عبد العزيز
  • سمر عبد العزيز
  • نورس عبد الواحد
  • عبد اللطيف عبد الحميد
  • جميل عز الدين
  • هالة شكر الله
  • عائشة ذو الغنى

Only 4 of the 7 begin with a word in BOUND_GIVEN_NAMES (عبد). The others begin with عز, شكر and ذو. عز الدين and شكر الله are compounds whose SECOND word is the fixed part (الدين "of the religion", الله "God"). So there are two candidate mechanisms:

  • (a) a bound word joins forward in any position, not only the first;
  • (b) a word list of second elements (الدين, الله, الغنى) that join BACKWARD to the word before them.

Proposed statement, for (a). A bound given-name word that is not the name's first word joins the word after it, and the pair is placed by position like any one name word. So Tariq Abdul Aziz → family Abdul Aziz.

Boundaries to settle:

  • Abdul Rahman Abdul Aziz → given Abdul Rahman, family Abdul Aziz.
  • Muhammad Abdul (nothing to join) → family Abdul, as today.
  • Family-first order: Abdul Aziz Tariq under FAMILY_FIRST → family Abdul Aziz.
  • After a family comma: Abdul Aziz, Tariq already reads family Abdul Aziz; check it is unchanged.

Accepted consequences, if (a):

  • A three-word name whose middle word is Abdul now reads it as part of the family. If Abdul Aziz were a second given name in a patronymic chain, that reading would be wrong.
  • Nasab chains (X bin Abdul Aziz) need checking against P2's bin chain.

Open questions:

  • Does (b) belong in the default vocabulary, or only in a future Arabic pack (see the v3 language-packs design notes)?
  • Does the join in non-leading position need the same "a word to spare" reserve P5 uses?

Exclusions. The Persian (ییلاقی اشرفی) and Bulgarian (Цветков Дерменджиев) double surnames in the same record are a different shape: two family words with no bound word. They belong to the double-surname question, not this one.

Activity

  1. self-assigned this
    on Oct 17, 2026
  2. added
    vocabularyPer-word vocabulary model and language packs
    on Oct 19, 2026
  3. derek73 commented on Nov 4, 2026

    @derek73
    OwnerAuthor

    Measured: would a particle reading of abdul settle the Latin-script half?

    A particle in the middle of a name chains forward into the family (rules/P2), so giving abdul a particle reading reads Tariq Abdul Aziz as family Abdul Aziz. Hassan Abu Talib already reads that way, since abu is both a bound given-name word and a teknonymic particle (#269). That is option (a) for Latin script, with no new mechanism. The build requires a particle that is also a bound given-name word to have a given reading too, so a name opening with Abdul would start reporting PARTICLE_OR_GIVEN, as Abu does.

    Where filers put a non-leading Abdul with a word behind it (2026-11-04; ORCID's 2025 public file as fetched 2026-10-27, and the UK PSC register as fetched 2026-10-22):

    Source Pair in the family / surname box Pair in the given box Abdul in given/middle, next word the surname
    ORCID (given and family boxes) 935 (Malaysia 482, Iraq 77, Pakistan 48) 266 141 (Bangladesh 69)
    PSC (forename, middle and surname boxes) 235 246 (middle-name box) 324 (British 199, Pakistani 34)

    The sources disagree:

    • ORCID: about 70% of the pairs are a family name. Malaysia drives it, where Ahmad Abdul Rahman writes the father's name without bin.
    • PSC: about 29% are. Its commonest shape is Mohammed Abdul Khan, with Abdul a middle name, which the default reads right today and a particle reading would make family Abdul Khan.

    abu splits the same way (ORCID 1,209 family against 144 otherwise; PSC 75 against 95), so its particle reading already pays this cost.

    What it does not reach:

    • Three of the seven Arabic-script names above open with no bound word (عز الدين, شكر الله, ذو الغنى). Their fixed part is the second word, which is option (b).
    • The four that open with عبد would need عبد to read as a particle too.

    Proposal: not a default. The convention is Malay and Arab, and British South Asian filers write the other way. A particle reading of abdul (and عبد) written default = false, which a Malay or Arabic language choice turns on, would follow how es and cs carry their family-name conventions. Next step: measure that choice per country with tools/differential/config_diff.py against ORCID and PSC. Option (b) stays open.

    Recompute: over each record's boxes in order (ORCID given then family; PSC forename, middle_name, surname), take the first Abdul/Abu (case-folded) that is not the first word and has a word after it, and key it by the boxes holding it and the next word.

  4. added this to the 3.0 milestone on Nov 4, 2026
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