It’s genuinely captivating, mainly because it offers a history lesson regarding how the term "boycott" came about. Cecil Parker portrays the gentleman around whom the resentment of his Irish tenant farmers coalesces in the latter part of the 1800s. Charles Parnell (Robert Donat) advocates for a more peaceful way to demonstrate opposition—and Stewart Granger, as “Hugh,” urges those working with him to refuse their dut…