Some of the qualities of Mannerism that are reflected in Bronzino’s work were “elegance, style, and technical skill. also the Mannerists took a very different approach. the term “mannerism” was used to suggest a more formal, less passionate approach to painting, with a focus on technique and style”.
Although I'm not sure, I do believe it is "Delphic Sibyl". Good luck!

The sentence below in green is the answer!

Answer:
Luke the Evangelist, the author of the third gospel account (and the Acts of the Apostles), is symbolized by a winged ox or bull – a figure of sacrifice, service and strength.
Explanation: