Left back Powell signs on with the Hoops for another season while Ledwith joins from UCD and Murphy from St Patrick's AthleticShamrock Rovers have announced the signings of Daniel Ledwith and Barry Murphy, as well as the renewal of the contract of Conor Powell.
Ledwith, 21, joins from UCD after featuring as a regular for the Students during the 2012 Airtricty Premier Division season while Murphy, 27, is back at Rovers after a stint in goal for St Patrick's Athletic.
Murphy, a former Shamrock Rovers schoolboy who worked with manager Trevor Croly at Richmond Park, told the club's official website: "I'm delighted to be back at Shamrock Rovers. I spent a couple of years away from the club, but before that I was here for most of my career.
"I worked with Trevor at St Pat's last season and I'm looking forward to working with him again next season. I think Trevor is putting a good squad together and I'm delighted to be part of that."
And commenting on his re-signing, Powell said: "I'm really glad to be staying at the club. Last year was massively disappointing and I'm glad I'll get the chance to stay on and make amends for that. I think we'll have a very good side next year.
"It's good to have my contract sorted early. It can be an uncertain time for players, but now I can just concentrate on getting ready for next season."