Murray's 1913 primary account offers no shape-based ('jester's cap') mechanism for the French chess-piece name 'fou,' and rejects a rival phonetic derivation

H.J.R. Murray's taxonomy of how the Aufin (the Arabic al-fil chess piece) was renamed across Europe lists four independently arising categories: an old man, a bishop-ecclesiastic, a count, and a fool. The French renaming — fou ("fool," from Old French fol) — falls in the fourth category, which Murray presents purely taxonomically: no shape, resemblance, or headwear reasoning accompanies it anywhere in his discussion (A History of Chess, 1913, pp. 424f.). A "jester's cap" reading of the piece's silhouette, mirroring the English mitre reading documented at claim-minsheu-1627-describes-chess-bishop-as-mitre-shaped, is not present in Murray's account at all.

Murray goes further and positively rejects a specific rival derivation: the theory that Old French fol/fou is a phonetic corruption of Arabic fil ("elephant") by popular etymology. He calls this hypothesis unsupported, noting it would require the popular French name for the piece to have been the bare fil rather than al-fil — a usage "not a single instance of... is on record." Between the taxonomic silence on shape and the explicit rejection of a competing phonetic account, this primary source neither offers nor implies a mitre-style visual mechanism for the French name.

The vault's existing synthesis at claim-chess-bishop-renamed-for-local-resemblance-not-elephant presents the English-mitre and French-jester's-cap namings as one symmetrical mechanism, sourced to a Tier 4 Wikipedia sentence that attributes the jester's-cap detail to Henry A. Davidson's A Short History of Chess (1949) — a work the vault has still not read directly (entity-henry-a-davidson; archive.org copy lending-restricted). Until Davidson is read, the French-jester's-cap half of that claim stays flagged [unverified-mechanism — needs primary], tracked at question-verify-chess-bishop-renaming-primary-source; this note records what the other named primary (Murray) actually says, which is "not this."