Taylor gave Brentford a third-minute lead when he stabbed in the rebound from Harlee Dean's goal-bound volley before Donaldson reacted to a loose ball to make it 2-0 with less than quarter of an hour gone.
Tranmere searched for a way back into the game and it came a minute before the interval, with Atkinson slotting home after an intricate passing move undid the Bees defence.
Brentford keeper Richard Lee then couldn't keep out Dugdale's 55th-minute equaliser after getting a hand to Joe Thompson's header but Donaldson soon pounced to head home his second.
Stockton thought he had played a super-sub role to perfection for Rovers when he found the net on 90 minutes but an injury-time penalty allowed Forshaw to net the winner.
- Sports & Recreation
- Clayton Donaldson
- Adam Dugdale