Once described as "Britain's number one terrorist", Martin McGuinness left his past behind to become one of the major players in Northern Ireland's peace process.

Former NI Secretary Peter Hain: "A strong leader who took his followers from terror and hell into peaceful co-existence with the old enemy"

Ian Paisley Jnr: "If we could do a deal with Martin McGuinness...we could then work with any republican"

Denis Bradley: History will look upon McGuinness's contribution as central to "major changes within the fortunes of Ireland"

Rev Harold Good says Martin McGuinness was respected for the fact that he did not try to hide his past

Bertie Ahern says Martin McGuinness's legacy lies in his determination to stand firm against those opposed to the peace process