The mammoth baby born to Manny and Ellie in Ice Age: Dawn of the Dinosaurs is named Peaches.
Peaches is introduced as the couple’s newborn daughter near the end of the 2009 film. Her arrival changes Manny and Ellie’s relationship and becomes an important part of the family storyline in subsequent Ice Age movies.
The name refers to the character rather than to a location, object, or song. Peaches later grows into a young mammoth and becomes a central member of the next generation in Ice Age: Continental Drift and Ice Age: Collision Course.
Roshan is the human baby from the original Ice Age, so that name belongs to a different story. Molly is not Manny and Ellie’s daughter, and Brooke is a sloth character associated with Sid in Collision Course. These distinctions help separate the franchise’s many supporting characters.