The de Jongh combination made a flying start and maintained that momentum to win 15-7 after 14 ends.
Down 14-2 after 10 ends, Samuel was forced into driving to desperately try to kill ends and never quite managed to peg back the leeway.
It was a sweet result for the de Jongh side, as last year it lost the final narrowly to Margaret O'Connor's Central Otago triple.
It was reward, too, for the remarkable consistency shown again by de Jongh as she also performed with distinction to make the semi-finals in the singles and in the pairs with Crowe, another top performer with three national titles to her credit.
De Jongh's singles semifinal conqueror, Bay of Plenty's Marilyn McLeod, made no race of that final.
McLeod waltzed away to a 13-0 lead after seven ends against Waikato's Sue Burnand, the national fours winning skip in 2011, to eventually win 21-9.
This gave McLeod her second title in this event, having earlier been successful in 2010.