Peter Browngardt. Writer: Uncle Grandpa. Peter Browngardt was born on 12 August 1979 in Sag Harbor, New York, USA. He is a writer and producer, known for Uncle Grandpa (2010), Looney Tunes Cartoons (2019) and Secret Mountain Fort Awesome (2007). He has been married to Kristina Baranovich since 16 October 2011.