This name links two obscure Beach Boys references.
Murry Wilson was the father of Beach Boys members Brian Wilson, Denis Wilson and Carl Wilson, and uncle to Mike Love. He worked as the band's manager in their early days.
His relationship with his sons was notoriously complicated. Various stories of abuse have circulated, including that Murry hit his son Brian in the head with a piece of lumber, deafening him in one ear. He was also extremely domineering, maintaining strict control over the group's image and sound. In 1964, he was relieved of his duties as manager. He went on to sell the family publishing company against his sons' wishes. There have even been suggestions that he forged their signatures on documentation.
Smile is a legendary unreleased Beach Boys album, recorded between 1966 and 1967. Brian Wilson intended it to be a successor to Pet Sounds, but could never complete it to his satisfaction. Many of the songs intended for the album ended up being recorded for later albums.
In 2004, Wilson released a finished version of the album under his own name.
According to sources close to the author, Pynchon was an admirer of the Beach Boys during the 1960s. One associate, Jules Siegel, has written about an evening he spent with Pynchon and Brian Wilson, both of whom seemed to be fairly unnerved by each other.