A lersi (ฤๅษี, also ruesi, reusi) is the ascetic-seer — the Thai form of the Sanskrit ṛṣi (rishi), the forest-dwelling hermit-sage who masters the esoteric arts. In the living tradition the lersi is not one figure but a whole class of teacher-ancestors: the originators and patrons of wichaa itself — astrology, alchemy, herbal medicine, the drawing of yantra and the reciting of katha. To learn a magical art is, in the tradition's own telling, to receive it down a line that runs back to a lersi.
The catalogue holds zero witnesses whose title names a lersi. Every spelling was checked — lersi, ruesi, reusi, rusi — and the corpus of 6,959 manuscripts returns nothing. This is not a rendering quirk; it is a real absence in the two academic sources digitised so far (DLNTM and EFEO).
Inference — that absence is precisely why the lersi sits at the very top of this archive's want list. The subject scorer rates it maximum thematic importance (it is the root of the whole wichaa tree) against zero availability — the exact signature of "central to the tradition, invisible to the crawl so far." A gap this shaped is a finding, not a blank: it tells us the lersi lives in sources we have not yet reached, not that the lersi is unimportant.
But the gap is a title-index gap, not an archive gap. The count above is a match on manuscript titles. Read the digested contents of the archive and the lersi is everywhere — see the next section. This is the title-vs-content distinction this article predicted, now demonstrated: the seer was never missing from the tradition the archive holds, only from the line that names each book.
Corpus — the passages below are quoted from a second, distinct body of sources: the 30 printed wichaa textbooks contributed to the archive and OCR-digested into the `pages` table (not the palm-leaf catalogue the count above measures). Citations give the text's slug and page. This is primary evidence from within the archive — plain, checkable — and it corroborates much of the Tradition skeleton that follows it.
A content-level read finds the lersi in 13 of the 30 textbooks — densest in the katha and consecration manuals (vedic-katha-for-chai-chatri, compendium-of-ancient-katha, making-sacred-charms-and-amulets), but reaching the meditation, herbal and massage manuals too. The seer is not a topic in these books; he is the authority they invoke to make the work valid.
Inference — this is the content-level pass the note below asked for, arriving early from the contributed corpus rather than a re-crawl. It does not fill the palm-leaf gap (the academic libraries still return n=0), but it means the archive already attests the lersi as teacher-lineage and pantheon-head — the exact role the tradition assigns him. The seam here is pure provenance: same tradition, a different shelf.
Tradition — everything in this section is background from the wider Thai–Lanna tradition and my general knowledge, not drawn from any manuscript in this catalogue. It is offered to sketch the skeleton the future crawl should flesh out; treat specifics as orienting, not authoritative.
Tradition / Inference — the lersi is absent from the catalogue as a title-subject but present within it as an actor. Lanna's own foundation-chronicles credit founder-rishis with establishing the northern cities: the seers who raised Haripuñjaya (Lamphun) and invited Queen Camadevi from Lavo. Doi Suthep, the mountain above Chiang Mai, carries a hermit's name to this day. So the figure very likely sits inside the tamnan / chronicle corpus — in the narrative, not the title line — and a content-level pass (reading `raw_metadata`, not just titles) is the way to recover it. (I have not verified this against specific catalogue records; it is a directed hypothesis for the next enrichment pass.)