Gloucester surged ahead to a 14-6 lead after 29 minutes when Robinson kicked his thrid penalty and Akapusi Qera opened the try-scoring.
Gloucester briefly took the lead after the break as Robinson converted a penalty try in the 52nd minute, but the Saints negated the score two minutes later as Lee Dickson crashed over for a try before Myler added the extras.
The kickers slotted a penalty each to finish off the clash as Northampton claimed the LV= Cup with a six-point margin of victory.
Final Score Northampton 30 Gloucester 24
Scorers
Northampton
Tries - Tonga'uiha, Downey, Dickson
Pen - Myler 3
Con - Myler 3
Gloucester
Tries - Qera, Penalty
Pen - Robinson 4
Con - Robinson
Teams
Northampton:, 15 Shane Geraghty, 14 Bruce Reihana, 13 Jon Clarke, 12 James Downey, 11 Paul Diggin, 10 Stephen Myler, 9 Lee Dickson, 8 Roger Wilson, 7 Neil Best, 6 Phil Dowson (c), 5 Juandre Kruger, 4 Courtney Lawes, 3 Brian Mujati, 2 Brett Sharman, 1 Soane Tonga'uiha.
Replacements: 16 Andy Long, 17 Regardt Dreyer, 18 Jon Vickers, 19 Mark Hopley, 20 Mark Easter, 21 Alan Dickens, 22 Barry Everitt, 23 Joe Ansbro.
Gloucester: 15 Freddie Burns, 14 James Simpson-Daniel, 13 Tim Molenaar, 12 Eliota Fuimaono-Sapolu, 11 Lesley Vainikolo, 10 Nicky Robinson, 9 Rory Lawson, 8 Adam Eustace, 7 Akapusi Qera, 6 Peter Buxton (c), 5 Alex Brown, 4 Will James, 3 Pierre Capdevielle, 2 Olivier Azam, 1 Nick Wood.
Replacements: 16 Darren Dawidiuk, 17 Yann Thomas, 18 Rupert Harden, 19 Apo Satala, 20 Andy Hazell, 21 Dave Lewis, 22 Tom Voyce, 23 Charlie Sharples.
