Samuel Joslin plays Jonathan Brown in the 2014 film Paddington. Jonathan is the Brown family’s son and becomes Paddington’s adoptive brother after the family takes the bear home from the station.
Joslin was a child actor when he appeared in the film. Jonathan is portrayed as adventurous and enthusiastic, contrasting with his father Henry, who is more worried about the risks of keeping an unknown bear in the house.
The Brown children are Jonathan and Judy. Madeleine Harris plays Judy, Jonathan’s sister, while Hugh Bonneville plays their father Henry. Ben Whishaw is not a member of the Brown family; he provides Paddington’s voice.
Jonathan’s role helps show the different ways the family responds to Paddington. He is curious about the newcomer and quickly treats him as a companion. That family dynamic is central to the film’s story of Paddington finding a home in London.