Baretti: A dictionary of the English and Italian languages
Occórre-re, v. n. (V. correre,)
1. to go before, to recounter or meet; 2. to happen, to come to pass, to chance. Occorsemi d'avere un buon cavallo, I happened to have a good horse; 3. to be needful or necessary, to want. Non occorre che voi mi scriviate, you need not write to me. V'occorre niente? do you want any thing? 4. to remember, to call to mind; adj. Occórre-nte.
Florio: a worlde of wordes, or most copious, dictionarie in Italian and English
occorrere: to occur, to happen, to chance, to betide, to come to passe. Also to meet with or runne vnto.