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The Encyclopedia of Horology

Paris, France · 1686 – 1759

Julien Le Roy

Partially verified

Royal clockmaking and refinement of the verge escapement

Life & work

Julien Le Roy was a leading Paris clockmaker of the early-to-mid eighteenth century, appointed clockmaker to the French court, whose workshop produced watches and clocks of high technical and decorative quality for royal and aristocratic clients. He is credited with practical refinements to the repeating watch mechanism and to verge escapement construction, and his workshop was among the most prestigious in Paris in its period, predating the later precision-chronometer generation represented by his son.

His son, Pierre Le Roy, carried the family workshop into the marine chronometer research that placed French horology in direct comparison with the English chronometer school of Harrison, Arnold and Earnshaw; the continuing firm, later known as Le Roy et Fils, remained prominent into the nineteenth century, distinct from the unrelated later French brand simply called 'Leroy.'

Julien Le Roy's own reputation rests substantially on the volume and quality of his court and aristocratic commissions rather than a single named invention, reflecting the pre-chronometer-era emphasis in French horology on refined craftsmanship and royal patronage as much as on measurable precision.

Timeline

Julien Le Roy's recorded dates, dated events from this profile and its sources, and dated pieces and sales from the object catalogue. Dates are as each record gives them.

  1. 1686 · Career

    Born

    Profile text · see Sources

  2. circa 1740 · Catalogued piece

    Julien Le Roy Four-Train Coach Watch

    Provenance: Antiquorum

  3. 1759 · Career

    Died

    Profile text · see Sources

  4. ca. 1768 · Catalogued piece

    Lyre-form Mantel Clock

    Provenance: Rijksmuseum

  5. circa 1780 · Catalogued piece

    Julien Le Roy Pair Cased Center Seconds Watch

    Provenance: Antiquorum

  6. circa 1800 · Catalogued piece

    Julien Le Roy Centre Seconds Rack-Lever Watch

    Provenance: Antiquorum

Training, contributions & innovations

  • Produced watches and clocks of exceptional quality for the French royal court
  • Refined repeating-watch mechanisms and verge escapement construction
  • Founded the family workshop tradition continued by his son, Pierre Le Roy

Inventions & patents

  • No specific verified patent document is confirmed for Julien Le Roy's mechanical refinements in the sources consulted; his reputation rests on documented court commissions and workshop output.

Signatures & markings on surviving work

  • Watches and clocks signed 'Julien Le Roy à Paris'

Collecting significance

Genuine Julien Le Roy pieces are institutional or high-end collector rarities; should not be confused with his son Pierre Le Roy's later chronometer work or with the unrelated later Leroy (Besançon) brand.

Firms, key models & movements

In the object catalogue

8 catalogued objects are recorded under Julien Le Roy. Attributions are as given by each source and are not independent authentication.

  • Full view of the mantel clock featuring the porcelain figure and floral arrangement.
  • Front view of the gold and enamel watch by Julien Le Roy, 18th century.
  • View of the Julien Le Roy pair cased watch showing the enamel dial with Turkish numerals, gilt hands, and tortoise-shell outer case.
  • Front view of the regulator clock, showing the wood-veneered case and dial.
  • Front, back, and interior views of the Le Roy coach watch
  • The movement of the Julien Le Roy pocket watch, showing the rack-lever escapement and pirouette.

Browse all 8 in the object catalogue

Provenance

Where the 8 catalogued pieces by Julien Le Roy were recorded, with the collectors, owners and sales their records name.

Provenance map

Each piece is linked to the museum, auction house or dealer whose record it comes from, and to any other house or collection its own provenance names. Select a name to see its pieces.

Museums · 3 pieces

Auction houses · 5 pieces

Antiquorum

Auction house · 3 pieces · Directory entry

  • Julien Le Roy Centre Seconds Rack-Lever WatchOpen-face watch · circa 1800 · Record source

    Antiquorum: lot 18

    Open the object record

  • Julien Le Roy Four-Train Coach WatchMusical & automaton watch · circa 1740 · Record source

    Antiquorum: lot 365

    Open the object record

  • Julien Le Roy Pair Cased Center Seconds WatchVerge & pair-cased watch · circa 1780 · Record source

    Antiquorum: lot 15

    Open the object record

Collectors, owners and donors

Auction history

Each line is copied from the object's source record and is not independently verified. Holders are as recorded when the piece was catalogued: museum objects may not be on display, and sold lots have since changed hands.

Photographs

Julien le roy in cassa di antoine foullet, orologio da mensola, xviii secolo
Julien le roy in cassa di antoine foullet, orologio da mensola, xviii secolo — Julien Le Roy / Antoine Foullet, CC BY 3.0. Wikimedia Commons file page
Portret van Julien le Roy, RP-P-OB-71.396
Portret van Julien le Roy, RP-P-OB-71.396 — Rijksmuseum, CC0. Wikimedia Commons file page
Bronze and Porphyry Clock by Julien Le Roy, 19th Century For Sale at ...
Bronze and Porphyry Clock by Julien Le Roy, 19th Century For Sale at ... — 1stdibs.com, Rights unverified — web image search result, review pending. Web page (1stdibs.com)
Movement by the workshop of Julien Le Roy | Mantel clock (pendule de ...
Movement by the workshop of Julien Le Roy | Mantel clock (pendule de ... — metmuseum.org, Rights unverified — web image search result, review pending. Web page (metmuseum.org)
Clockmaker: Julien Le Roy | Mantel clock | French, Paris with French ...
Clockmaker: Julien Le Roy | Mantel clock | French, Paris with French ... — metmuseum.org, Rights unverified — web image search result, review pending. Web page (metmuseum.org)
Mantel clock. Clockmaker Julien Le Roy, Paris, France. 3rd quarter of ...
Mantel clock. Clockmaker Julien Le Roy, Paris, France. 3rd quarter of ... — rundale.net, Rights unverified — web image search result, review pending. Web page (rundale.net)
Watchmaker: Julien Le Roy - Repeater watch - French, Paris - The ...
Watchmaker: Julien Le Roy - Repeater watch - French, Paris - The ... — The Metropolitan Museum of Art, Rights pending — source and visual checks completed; permission not yet requested. Web page (metmuseum.org)
Julien Le Roy à Paris, Kutschenuhr, circa 1775 (5).jpg - Watch-Wiki ...
Julien Le Roy à Paris, Kutschenuhr, circa 1775 (5).jpg - Watch-Wiki ... — Auktionen Dr. H. Crott, Rights pending — source and visual checks completed; permission not yet requested. Web page (watch-wiki.org)
Julien-Le-Roy, quarter-repeating watch
Julien-Le-Roy, quarter-repeating watch — Fondation Haute Horlogerie, Rights pending — source and visual checks completed; permission not yet requested. Web page (hautehorlogerie.org)

Photographs are illustrative examples of the type, not necessarily the exact object described. Verify details against the source file page.

Sources & references

  1. Musée des Arts et Métiers, Paris, collection records
  2. Chapuis, A., La Montre chez tous les peuples

Where sources disagree, the disagreement is stated rather than resolved silently.