"September 4, 2011 "In Newport, CA for Gordon and Irene's wedding. First time in 9 years that all four brothers have gotten together. Wedding's tomorrow at the Ritz Carlton, Laguna Nigel."
The obituary for Norman Hansen's 18 Aug 2014 death states: "He is preceded in death by his first wife, his parents, and his brother, Burton Hansen."
So Ralph Burton's death occurred between 4 Sep 2011 and 18 Aug 2014 or thereabouts. So I'm meeting in the middle and calling it "abt 2013"