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".
More top news
The latest weather forecast with Emma Jesson.
Emma brings you Sunday's forecast for South Yorkshire and Lincolnshire
Emma brings you Sunday's forecast for North, South, West Yorkshire