I've been browsing the Drouin Records and have identified hard evidence linking the Jacques Quevedo of Kaskaskia, Illinois, listed in the reconstructed 1776 St Louis census with the family of Joseph Quebedeaux dit L'Espagnol.
Nicolas Prevost dit Blondin and Marie Francoise Quebedeaux had a daughter (Francoise) baptized on 21 Nov 1747. What appear to be the sponsors of the child are Jacques Quebedeaux and Josephe Quebedeaux, spouse of Pinau.
We know that Marie Josephe Quebedeaux m. Maturin Pinau was the sister of Marie Francoise; was Jacques was the child's uncle?
In addition to Jacques Quevedo (along with Catherine Quevedo and Marianne Jacobo Quevedo), the reconstructed 1776 census also includes two of Joseph L'Espagnol's daughters:
Gilles Duchemin age 63, and Marie Jeanne (no age)
Claude Tinon (no age), Jeanne Tinon (age 62). This is Marie Jeanne Quebedeaux m.1 Maturin Pinau abt 1750, m.2 Thomas Alexander Laville 19 May 1749, m.3 Claude Tinon 17 Jan 1764. This age would seem to be inaccurate, however, as this would put her birth year as abt 1714
An additional note: I ran across a message posted by Stanley Leblanc which stated the Militia list for St Louis, dated 27 Jul 1765, contains the names of Jacques Lespagnol and Charles Lespagnol (no ages given). It would appear this may be Jacques Quebedeaux (from above) and Charles Quebedeaux (of Louisiana fame)!