Where does “Fulana” come from?

Fulana (Spanish) comes from English flannel, from Middle English flaunneol, from Old French flanelle, from Old French flaine, from Proto-Celtic wlānos, from Proto-Celtic wlanā, from Proto-Indo-European h₂wĺ̥h₁neh₂, from Proto-Indo-European -nós — Creates verbal adjectives from roots.

Fulana (Spanish): miss so-and-so