I found another reference to Jack Walsh, in the movie “Midnight Run”.
Beginning of the plot description according to Wikipedia:
Bounty hunter Jack Walsh (Robert De Niro) is enlisted by bail bondsman Eddie Moscone (Joe Pantoliano) to bring accountant Jonathan “The Duke” Mardukas (Charles Grodin) back to L.A.
Is it possible that Walsh (Christopher Gorham) and Emma are business friends?