Answer:
Dioneo's story will be about a marquis.
Step-by-step explanation:
The excerpt is from "The Decameron" by Giovanni Boccaccio. The tenth story of the tenth day that Dioneo is going to narrate will be based on Griselda, whose husband is the Marquess of Saluzzo. He tested her in various ways, including giving up her children, divorcing her and marrying another woman. This is a 'story within a story' where the 10 men and women each took turns telling stories every night to pass the time during their hideaway from the Black Death that is the setting of the whole book.