sims , who had burkitt 's lymphoma , died on saturday , with his new wife lindsey sims by his side .
the pair married march 21 at the university of texas m.d. anderson cancer center , after john , who was told his cancer was terminal .
john sims , who had burkitt 's lymphoma died on saturday , was told his cancer , was terminal .
after the wedding they set off on a cross-country road trip last week , hoping to make it to visit john 's friend dave in oregon .