Mark Addy (“A Knight’s Tale”), Maury Chaykin (“Entourage”) and Saul Rubinek (“Warehouse 13”) are rounding out the cast of “Barney’s Version,” starring Paul Giamatti and Dustin Hoffman.

Lensing begins Aug. 17 in Rome with Richard Lewis directing from the Michael Konyves script, based on the novel by Mordecai Richler. Story’s title character has led a reckless life highlighted by three marriages, two children and status as a “person of interest” in the mysterious disappearance of his bosom buddy.

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