Paisley's eventual journey was as remarkable as the man himself
My grandmother, a staunch Belfast Protestant, utterly adored Ian Paisley, keeping a framed photograph of him and his wife Eileen proudly cradling their new-born twin sons, on her Shankill Road wall.
The two boys both followed in their father's footsteps: Ian is today an MP in the party he set up while Kyle is a minister in the church he founded.
Paisley had other followers back then in the 1960s, but they tended to be confined to traditional hardline working-class areas such as the Shankill.
It was not exactly a golden age, but it was a time of lessening tensions and an improving political and social atmosphere, with talk of better relations between Protestants and Catholics.
Ian Paisley opposed all this every step of the way, in the most dramatic and uncompromising terms. His speeches potently combined politics and religion, warning against any idea of concessions to the twin foes of nationalism and Catholicism.
His rallies sent pulses racing: many of the people streaming away from them had faces shining with excitement, his demagoguery having exhilarated and terrified them with his dire warnings that the IRA and Rome were both out to get them.
The Catholic church was stronger then, but there wasn't much of an IRA. Looking back, many have wondered whether the Paisley rhetoric helped create the conditions for its growth into such a fearsome terrorist organisation.
Certainly Gerry Adams has written that one of his earliest political experiences was observing a riot which followed some Paisley bombast. Adams wrote of "rallies at which Paisley bellowed forth a message of virulent religious hatred".
While his conduct thrilled his Protestant faithful, it had a very different effect on many nationalists. A Protestant minister once confided he had asked IRA leader Daithi O Conaill about a rumour the IRA might try to kill Paisley. He recalled: "O Conaill just simply told me, 'There's no way we would kill Ian Paisley. Paisley is the best recruiting sergeant we've got.'"
The clergyman related O Conaill saying: "When they hear him, a chill goes down the spine of every Catholic in west Belfast. And after that we have no trouble getting volunteers, safe houses and money.'"
While Paisley was perversely useful to the IRA, he was absolutely loathed by all those who over the years pursued the idea of an agreed settlement. A score or more of Northern Ireland Secretaries came and went from Belfast, some of them trying hard to find an accommodation. The local centrist parties all favoured some form of powersharing, but they and British ministers were repeatedly thwarted by the twin obstacles of Paisley and the IRA.
Violence - from loyalists as well as republicans - poisoned the atmosphere, and so did Paisley's absolute insistence that no deal could be done with nationalists, Catholics and above all republicans. In effect he exercised a veto on compromise.
This meant that the troubles dragged on for decades, taking many lives and making the North a byword for endless violence and perpetual disagreement.
The first cryptic signs that something might change came from the republican and nationalist side, where the rhetoric changed although the bombing continued. Paisley watched this with keen interest but for years gave no indication that he might be prepared to move.
But his position became steadily stronger as he gradually overtook the main Ulster Unionist party, establishing itself as the strongest Protestant voice. At this point a new approach became theoretically possible, since his new strength meant that he would be the leader of the pack.
Still, his years of implacable negativity made it seem impossible that he would do a deal, especially since the numbers meant he would be going into government with Sinn Fein.
The very idea of a Paisley/Sinn Fein government was therefore unthinkable - until the very moment when cameras were allowed into a Stormont committee room to show Paisley and Gerry Adams, the ancient foes, sitting at the same table.
Everyone gaped in amazement a government, headed by their two parties and including others. Paisley would be first minister, with Martin McGuinness of Sinn Fein - an acknowledged former member of the IRA - as his deputy.
The astonishment grew as the two old warriors of the troubles developed not just a working relationship but an actual genuine friendship. In the couple of years that followed a completely new Paisley emerged: a leader readily prepared to let bygones be bygones and leave the past behind.
As first minister he did not bother much with actual administration, instead embarking on a sort of lap of honour taking in places which had always disapproved of his previous record. He was feted in Dublin and Washington and elsewhere, no longer the man who gloried in conflict but instead, suddenly, an internationally-acknowledged peacemaker. My grandmother would have been stunned at his remarkable journey.