LOS ANGELES:- (AFP) Vincent Margera, the uncle of Bam Margera and whose quirky personality was a key part of the “Jackass” prankster TV franchise, died Sunday aged 59, US media said. Margera had kidney and liver problems for years and fell into a coma last month, relatives told the TMZ celebrity website, which broke the news of his death. His death comes after co-star Ryan Dunn was killed in a car crash in 2011. Margera, along with his better-known nephew, appeared on the “Jackass” do-not-try-this-at-home television show and then the movies of the same name, as well as the MTV series “Viva La Bam.”