Martin McGuinness was said to be furious at Theresa May's absent Brexit plan
The former deputy first minister of Northern Ireland is said to have been frustrated at "the lack of leadership" shown by Theresa May’s Government and was furious that there was “no clear” Brexit plan.
Mark Durkan the SDLP MP for Foyle who last spoke to Mr McGuinness at the end of January, said the "passionately political" 66-year-old seemed “frailer than normal”, but still remained “personally vexed” about Brexit.
Certainly I got no conversation out of him about his own health at all. It was always about the Brexit stuff
Francie Molloy, Sinn Fein MP for Mid Ulster
Speaking at the Embassy of Ireland in London on Tuesday night, Mr Durkan said: "He just found that something that was perplexing, and I was struck by the fact that he was probably more animated on that than he was in respect of the question of his own health, which obviously you don't want to probe anyway."
Mr Durkan added: "Obviously I wished him well in the fight that he had. But the conversation actually was more about the shape of politics at that time.
So it was more about the fact that we were going into an election period, it was about the kind of issues that had been factors for him in resigning."
Martin McGuinness' life in pictures Tue, March 21, 2017
The former deputy first minister of Northern Ireland, has passed away aged 66
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Martin McGuinness and Tony Blair look on at Stormont Parliament Buildings in Belfast in 2007
Francie Molloy, Sinn Fein MP for Mid Ulster, also said Mr McGuinness was more focused on the political challenges ahead, adding: "Certainly I got no conversation out of him about his own health at all."
Mr Molloy said: "He never talked about himself at all. It was always about the Brexit stuff and he was really annoyed about Brexit because he saw that as a big gap. Sinn Fein, having changed their policy around the European Union and having come on board on that whole issue, and then to be left abandoned again.
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Sinn Fein northern leader Michelle O'Neill at the vigil for Mcguinness
Gerry Adams helped carry McGuinness's coffin as hundreds paid tribute in Londonderry
"He took that particularly badly, that it could collapse and could damage the whole Good Friday Agreement. So he wanted to deal with that, and was still hoping that some special arrangement could be worked out so the North could remain within the European Union."
Although Mr Molloy knew of the former IRA commander’s ill health, he said he was "shocked completely" to hear about the death, adding: "I couldn't believe it because I was talking to people yesterday (Monday) who would have been in the know and they were saying there were indications that he was improving, he was responding well to the treatment."
Hundreds of people gathered on the streets just hours after his death to pay tribute to Mr McGuinnes in west Belfast.
Whilst world leaders including Bill Clinton hailed the 66-year0old as a “peacemaker”, families of IRA victims said knowledge of his death enabled them to have peace.
John Eaglesham, whose father – a postman and part-time soldier – was shot dead by the IRA in 1978, told Sky News at the candlelit vigil in Belfast: "People say about what he has done for the peace process.
They seem to forget that for a very, very long time he wasn't part of the solution he was part of the problem, in fact he was the main part of the problem."