The Cradle Piledriver, largely popularized by Jerry Lynn as his finisher, is a variation on standard piledrivers which sees the attacking wrestler grapevine the opponents leg with their arm.
The most common of which is similar to a Texas piledriver and was popularized by the legendary wrestler Karl Gotch. This move sees the attacking wrestler, from a position in which the opponent is bent forward against the wrestler's midsection, reach around the opponent's midsection and lifting them so that they are held upside down facing in the same direction as the wrestler, the wrestler then hooks his / her arms around one leg of the opponent before dropping to a sitting or kneeling position with the opponent's head falling between the wrestler's thighs down to the mat.
This variant can be used on other types of piledriver; most notably the Cradle tombstone piledriver variation, instead of wrapping both of his arms around the waist of the opponent, the wrestler wraps one arm around the waist and places his other arm between the opponent's legs, grabbing hold of his other arm. The wrestler then drops down on his knees, driving the opponent down to the mat head first.