The Saddest Photos From Beau Biden's FuneralVice President Joe Biden's oldest son, who died of brain cancer on May 30, was laid to rest on Saturday.By by David MackBuzzFeed News ReporterPosted on June 6, 2015, 6:33 pmTwitterFacebookLink Obama And Mourners Farewell Beau Biden, A Man With “A Mighty Heart” buzzfeed.com Beau Biden, Son Of Vice President Joe Biden, Dies Of Brain Cancer buzzfeed.com