> Based mostly on Northern Italy's languages (mainly Venetian and Genoese) and secondarily on Occitano-Romance languages (Catalan and Occitan) in the western Mediterranean area at first, Lingua Franca later came to have more Spanish and Portuguese elements, especially on the Barbary Coast (now referred to as the Maghreb). Lingua Franca also borrowed from Berber, Turkish, French, Greek and Arabic.
Which was a language that was barely related to modern French (besides belonging to the same Romance language sub-branch which includes Catalan, Occitan and most Northern Italian dialects, coincidentally places where most of those merchants who introduced that language came from).
So, very closely related to French?
Technically no. Especially not the northern dialects which modern French is based on. Arabs/North Africans/etc. just called all Western European Franks. The actual dialect/pigeon language used in the Mediterranean and called "Lingua Franca" was mainly based on Northern Italian, Occitan and Catalan (so barely related to modern French).