Relative clauses in Tayo, the French-lexicon Creole of St-Louis (New Caledonia) which emerged in the late 19th century, reflect in their construction and their distribution typically Melanesian patterns, including a subordinator derived from a personal pronoun, sa. Thematization similarly reflects Melanesian strategies, but may also be handled by clefting using a subordinator ki (< French qui). While this construction shows how the lexifier may be modifying Tayo, the emergence of a complex system of relativization and thematization, over three generations after the settlement of St-Louis in 1860, shows that French was not the "motor" of creolization, and suggests that creolization is, in effect, a special case of language shift and creation over some 50 or so years.