Massachusetts will always have a place in Wes Welker’s heart — and, apparently, in his hair. The former Patriots receiver signed with the Denver Broncos in the offseason, but he was back in town Wednesday to tout the work of his buddy, Dr. Robert Leonard. Leonard, you’ll recall, performed a hair transplant last year on Welker, who has become a spokesperson for Leonard’s practice. (More on Welker at the Capital Grille in Chestnut Hill in the Sports section.) . . . Oscar-winning actor Robert Duvall, who’s in town shooting “The Judge,” had lunch Wednesday at Myers + Chang. Duvall had requested a seat at the Whitey Bulger trial while he’s here, but our sources haven’t seen him.