French Sign Language family

French Sign Language
Geographic distribution	Before 1850, Western Europe, and North America; today parts of Europe, the Americas, Africa, and Asia.
Linguistic classification	One of the world's sign language families
Proto-language	Proto-LSF
Language codes
Glottolog	lsfi1234

The French Sign Language (LSF) family is a language family of sign languages which includes French Sign Language and American Sign Language, among others.

The FSL family descends from Old French Sign Language, which developed among the deaf community in Paris. The earliest mention of Old French Sign Language is by the abbé Charles-Michel de l'Épée in the late seventeenth century, but it could have existed for centuries prior. Several European sign languages, such as Russian, derive from it, as does American Sign Language, established when French educator Laurent Clerc taught his language at the American School for the Deaf. Others, such as Spanish Sign Language, are thought to be related to French Sign Language even if not directly descendant from it.

Languages

Wittmann (1991) lists the following suspected members of the family, with date of establishment or earliest attestation:

French Sign Language (1752; may be different from Old French Sign Language)

• Austro-Hungarian SL (1780; now seen as separate Austrian SL and Hungarian SL)
  • Czech SL (1786)
  • Russian SL (1806)
    • Bulgarian SL (1920)
  • Slovak SL
  • Yugoslav SL (1840; now seen as separate Slovenian, Croatian)
  • possibly Israeli Sign Language (1934) (though German Sign Language may be a stronger possibility)
• Dutch SL (1799)
• Danish SL (1806)
  • Norwegian (1825)
  • Icelandic SL (split ca. 1910)
• Latvian SL (1806)
• Philippine SL (1806?) (frequently attributed to American SL)
• American SL (1817, with possible local admixture)
  • Puerto Rican SL (1907)
  • Thai Sign Language (1951, creolized with indigenous sign).
  • Hawaiian Pidgin Sign Language (with possible local admixture) [turns out to be an isolate]
  • Ghanaian SL (1957)
  • Nigerian SL (1960)
  • Kuala Lumpur SL (1960?; now Malaysian SL?)
  • Bolivian SL (1973; a dialect of American SL)
  • Moroccan SL (1987?)
  • and "Eskimo SL"? (dubious; the indigenous Inuit Sign Language is an isolate)
• A mixture of FSL and ASL may have given rise to
  • Québécois SL (1817)
  • Greek SL (1950s, with local admixture)
• Italian SL (1828)
  • Tunisian SL (with local admixture)
• Irish SL (1846)
• Mexican SL (1869)
• Algerian SL (undated)
• Rumanian SL (undated)

and, perhaps,

• Catalan Sign Language (undated, but early)

Wittnann believes Lyons Sign Language, Spanish Sign Language, Brazilian Sign Language, and Venezuelan Sign Language, which are sometimes counted in the French family, had separate origins, though with some contact through stimulus diffusion, and it was Lyons SL rather than FSL that gave rise to Belgian Sign Language. Chilean Sign Language (1852) has also been included in the French family, but is not listed by Wittmann.

Anderson (1979)

Anderson (1979) had previously postulated the following classification of FSL and its relatives, with derivation from Medieval monk's sign systems, though some lineages are apparently traced by their manual alphabets and thus irrelevant for actual classification:

• Monastic sign languages (described 1086 AD)
• "Southwest European" SL
  • Proto-Spanish
    • Spanish (dictionary 1851)
    • Venezuelan
    • Irish → Australian Catholic
  • Old Polish → Polish
  • Proto-French (before l'Épée)
    • Eastern French: Old Danish (edu. 1807), Old German, German Evangelical (edu. 1779 Austria), Old Russian (edu. 1806)
    • Western French
      • Middle FSL finger-spelling group: Netherlands (1780), Belgium (1793), Switzerland, Old French
      • Middle French (dict. 1850) → French
      • American (edu. 1816; later including components from Northwest European SL's)
      • International finger-spelling group: Norway, Finland, Germany, USA
      • Old Brazilian → Brazil, Argentina, Mexico

See also

• BANZSL