Do Marius and Cosette Get Married?

Marius and Cosette are married on 16 February 1833, and the wedding day is a happy one. After the wedding, Valjean visits Marius and reveals his past.

How old was Cosette when she got married?

Cosette: Fantine's daughter who lives as a servant to the Thénardiers, Cosette is rescued by Valjean at age eight and is raised by him in Paris, knowing nothing about her past. At seventeen, she meets and falls in love with Marius, and eventually marries him.

Who is the father of Fantine's baby?

Félix Tholomyès is the former lover of Fantine and the biological father of Cosette, though this was never mentioned in the musical.