- "Connor was using your war in Oakland to drum up some new customers. Reaching out to the people Marks promised guns to. Selling them directly, pocketing the profits."
- ―Declan, telling SAMCRO about what Connor did.
Declan was a member of The True IRA on the FX original series Sons of Anarchy. Played by American actor Jason Barry, Declan makes his debut on the episode "Red Rose" in the series' seventh season. Called by the Sons of Anarchy Motorcycle Club to deliver Connor Malone's right-hand man, Hugh, Declan meets his demise in the series' subsequent episode, the series' finale episode, "Papa's Goods", in the series' seventh, and final, season.
After the Sons meet up with Connor, they go over to where Roarke and Declan are staying. Roarke and Declan inform the Sons that Connor sold guns without the permission of the IRA and that they need the Sons to kill him because if Connor isn't marked as a traitor, they can't take him out themselves. ("Red Rose")
Declan is called by the Sons to deliver Connor's right-hand, Hugh. Once he arrives with another member, they are asked to go to the roof. The Sons tell Hugh to call Connor to set a meet with him, but when Hugh tells them that it won't work, the Sons shoot Declan and the other member in the head. Hugh takes a picture of their bodies and uses them as proof to Connor that he got away from Roarke. After the Sons capture Connor, Roarke shows up to take care of Connor. Before they are able, Roarke asks about Declan. Jax tells him that he's dead and moments later, shoots Roarke in the head. ("Papa's Goods")
|Season 7 appearances|
|"Black Widower"||"Toil and Till"||"Playing with Monsters"||"Poor Little Lambs"||"Some Strange Eruption"|
|"Smoke 'em if You Got 'em"||"Greensleeves"||"The Separation of Crows"||"What a Piece of Work is Man"||"Faith and Despondency"|
|"Suits of Woe"||"Red Rose"||"Papa's Goods"|