The Knights Templar were among the wealthiest and most powerful of the Christian military orders in Europe during the Middle Ages. They were officially endorsed by the Vatican. The Knights wore distinctive white mantles with a red cross.
Donal, from the Knights Templars was charged to transport a powerful artifact from Jerusalem, hidden in a cart pulled by a donkey, and packed with battered furniture, chairs, and pots. He was bound for Trieste, and then to England, to bring the artifact to Stephen Strange.
On the way, he was captured with Matthew Murdoch by Count Otto von Doom, (who wanted the artifact), but escaped and went to the cart to retrieve his stick, which was the real artifact. It had been brought to Jerusalem by the Norsemen 800 years earlier. As Doom's guards approached, Donal slams the stick to the ground, which brings a blinding flash of lightning. The Four from the Fantastick are freed from Doom's dungeons, and look up into the sudden rainstorm and see Thor holding the Witchbreed's ship, carrying it down safely. He tells them that he is Thor of the Thunders.
Pilgrims had brought the staff to Jerusalem from the Northlands, when the days of the old gods were done. 200 years later, Hugh de Payns discovered it beneath the Temple. It was a "mighty secret", for if it was revealed the other gods walked the Earth, it might bring down the Church, but Donal enjoyed being Thor, and felt that he is damned for it.
It was discovered that Thor was needed to harness the lightning in order to fix the rip in time, but Donal didn't want to do it. He was afraid that Thor would never want to turn back into Donal, but Susan asks him to let Thor decide. Donal then changes to Thor, and asks what they want him to do. He channels the lightning into the anomaly, just as Nicholas Fury is carrying Captain America back through it. Thor then tells them that he will return to Asgard, where is father Wotan will advise both him and Donal, and he cannot be happy while he hears him screaming.