Robert CapronFrom Wikipedia, the free encyclopedia Robert Capron (born July 9, 1998) is American child actor who starred in Diary of a Wimpy Kid as Greg Heffley's best friend, Rowley Jefferson. He started off with a role in Bride Wars and later had small parts in Hachiko: A Dog's Story and the Disney film The SFilmographyThe Polka King (2017)Tarzan (2013)Diary of a Wimpy Kid: Dog Days (2012)Diary of a Wimpy Kid: Rodrick Rules (2011)Diary of a Wimpy Kid (2010)