Xiuhtēcuhtli: canonical, contested, and the false forms on record

A letter to a colleague, 31 July 2026 — on the name Xiuhtēcuhtli, and on the forms that keep failing it.

Your note said, roughly: surely the marks are a nicety. Permit me to use Xiuhtēcuhtli to show they are not.

First, the attestation. The tradition's record preserves this name in its romanized scholarly form: Xiuhtēcuhtli — no older script survives to transcribe, so the canonical content is the exactness of the spelling itself.

Say it aloud as the sources heard it: shee-oo-TEH-kwtlee — the kʷtɬ cluster released as one, no extra vowel; the final -tl sideways. The marks are what carry that sound to a reader who has never heard it spoken.

On the plain form — and I want to be precise, because you pushed on this. The plain form xiuhtecuhtli is not false — it is a fallback, and the register is exact about what that means. In systems that cannot carry diacritics (legacy databases, older tooling, parts of the address-bar pipeline) the flattened form is the accepted vehicle, and the rulebook names it explicitly as the final rung of the fallback hierarchy: full restoration first, circumflex where attested, macron-only by the academic standard, an attested variant, and only then plain ASCII.

What the fallback status forbids is promotion: xiuhtecuhtli may carry the name where marks are impossible, but it may not represent the name where marks are possible. A fallback is a vehicle, never the primary.

Now to the forms that provoked your letter. As for Xiuhtecuhtli: it comes from the publisher compromise — older books and hurried websites that print the "English equivalent" as if it were the name itself, and it fails because every substitution here (ē→e) is a romanization of convenience, not an attested spelling — it teaches the reader to guess, not to read

One more thing, because it always surprises: the name did not stay home. The friars saw him as the devil's furnace — and the people quietly kept lighting the hearth: the vigil-candle of Mexican folk Catholicism and the copal-smoke of Day of the Dead altars are his continuing liturgy. The Maya fire-lords and the Zapotec coquihani are his southern cousins; the New Fire concept — the cosmos rekindled by human hands — has no closer parallel than the Vedic agni-liturgies on the other side of the world.

And it never stopped working. The 52-year cycle's shadow falls on Mexico's calendar still; Huixachtlan's hill is in today's Mexico City sprawl, and the last New Fire was drilled in 1507 — the empire fell before the next. His wrinkled, brazier-backed figure is one of the most-recognized images of Aztec art (the great stone Huehueteotl of the Museo Nacional), and the fire-drill remains the emblem of renewal ceremonies across Mexican civic culture.

The Convention's Own History

Every tradition in this register has its own scholarly transliteration standard, built by its own specialists over decades or centuries, and the register follows each on its own terms: the tradition’s own standard. The principle that unifies them is the one the whole project stands on: a name is evidence, and evidence is not negotiable — not for keyboards, not for convenience, not for anyone.

Where Protocol Meets Practice

The technical answer is simple: the canonical marks are legal IDNA 2008 characters, encoded as punycode under `xn--`. The practical answer is messier: legal does not mean stocked (registrar inventory is partial), and stocked does not mean typeable (stacked diacritics defeat mobile keyboards).

So the register's rule is a hierarchy of attested forms — full restoration, circumflex, macron-only, attested variant, and finally plain ASCII for the systems that cannot carry marks. Every rung is defensible because every rung is attested. The forms this register rules against are not rungs; they are errors, and errors do not get rungs.

Write back when you have checked the sources; they are better company than I am.

— The Register

The Verdict

Xiuhtēcuhtli is the canonical form: attested, checkable, and enforced across the temple, the lexicon, the cards, the APIs, and this register. The plain form xiuhtecuhtli is sanctioned as the fallback vehicle and nothing more. The false forms above are documented so that no reader has to take the temple's word on faith — the violations are stated, the sources are named, and the register stands open to challenge on every line.

The temple of Xiuhtēcuhtli stands at /sites/xiuhtecuhtli/.

The docket for this ruling: 1 false form ruled against, Xiuhtecuhtli first on the docket; no contested forms attested; the attestation rests on 6 cited sources — Florentine Codex, Sahagún, Karttunen.

The Register Continues

The register holds 287 entries like this one — each temple with its own ruling. Read the temple's founding dispatch for the story, its Restoration File for the philology, its Resonance File for the industries, or the whole archive end to end.

Continue the register — previous entry: Xiān (read it) · next entry: Xīwángmǔ (read it).

The Canonical Register is written from the same canonical record as the lexicon itself. If a false form is missing from this page, it is because the evidence does not support calling it false — or because we have not seen it yet. Show us, with a citation, and the register will answer.