The online site of Saint Florence Parish in Wakefield, Massachusetts, lists its patron as the bishop of Strasbourg. A Flickr photo of his tomb and reliquary in the Cathedral of Strasbourg, France, also calls him St. Florence (as well as San Florencio) and lists his death as ca. 614.
The old Butler's Lives of the Saints show Florentius (a Latin version of the name) as a 7th c. bishop of Strasburg (so spelled) w/ a feast day of November 7th. He's the only saint of anything like that name in Butler's index.
The day MAY have been changed in the current calendar, but for somebody from that period that seems highly unlikely, particularly since it's the same in my next source.
The French-language Wikipedia includes a feminine Florence, Ste. Florence de Comblé, who reportedly lived in the village of that name (east of the market town of Celle-l'Évescault) as a consecrated virgin, and died at age 29. She was a companion of St. Hilary, the 4th century bishop of Poitiers who is a Doctor of the Church. Her feast is December 1.
She's conceivably the patron of the places named Sainte-Florence in Gironde and Vendée, France, and Quebec, Canada, that are listed in the English-language Wikipedia. Unless (especially in France) a more obscure local saint is commemorated.
Pope Benedict I is not a saint and has no feast day.
Saint Maria Goretti's Feast Day is July 6th.
The feast day of saint Mark is April 25.
Saint Christopher's feast day is July 25th.
Saint Laura's Feast Day is October the 19th.
July 24 is the feast day of Saint Charbel.
The 23rd of April is the feast day of Saint George.
Saint Helena's feast day is August 18.
August 11 is the feast day of Saint Philomena.
November 22 is the feast day of Saint Cecilia.
The feast day of Saint Apollonia of Alexandria is on February 9.
The feast day of Saint Anastasia of Sirmium is on December 25.