Calling it "an exceptional case", Judge Peter Kelson QC jailed David Rooke for six-and-a-half years, his son Jamie Rooke for four years and wife Donna Rooke for four months.
Judge Kelson also called it "a wake up call".
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Cold with scattered wintry showers overnight and on Monday.
Weather forecast for the Calendar region with Kerrie Gosney
Cold air from Canada will turn showers wintry overnight into Monday morning. Snow could settle over higher routes. Icy patches possible.