In the spring of that year, while the Britons of Cornwall were still preparing to deal with the Norman tax collectors, an invasion from the sea struck early, and about seventy Danish ships from Dublin appeared on the coast, as they had done last year, to plunder the peasants' last winter's food from the countryside, and the thin-legged Irish pigs raised by the natives became the predominance of the Danish and Gaelic warriors. In this way, King Harold's illegitimate sons took advantage of King William's distance in Normandy to return to the southwest, and this time, they tried to completely occupy the land.

The pine marten in the woods fell prey to hungry peasants, boiled mushrooms were the best delicacy of the season, and only the Norman lords in the castle enjoyed the abundant food and drank the blood-soaked wine. Outside the walls, the checkered and patterned Gaelic uniforms of Godwin's soldiers were everywhere, and the warriors of Cúchulainn and Odin swept through the wilderness, then pushed towers and ladders to the Tavistock ramparts where they were sheltering under the fearful gaze of the Normans.

When Tavistock was besieged, Roger of Montgomery was far away from the front line in Bristol, and news of the west side of Devon did not reach the Norman commander, in fact, Roger was left with only the knights of Brittany, and the Normans were all drawn from the Earl of William of Hereford. Roger's enemy was the Welsh leader Brute, a warrior of King Bredeen who hid in the woodlands across the Avon River, ready to bite the Normans like a viper.

In order to weaken the power of the Welsh, Brian, Earl of Pentivi from Brittany, at Roger's request, led his knights to harass the enemy's lands, and they set out from the ancient vicinity of Vancestie and invaded north to the mouth of the river, plundering the local villages and towns, but there was no trace of Brut. The Bretons crossed the land without danger as if they were at home, and upon reaching the vicinity of Casgwent, the Earl of Brian entered the estate of a local British nobleman, accompanied by his knights in precious robes. The lord of the manor had his daughter come out to entertain the nobles, and the maiden named Megan, who wore a splendid dagger around her waist and was dressed in white, like a fairy in the mountains, with her arms and feet exposed, poured wine for Earl Brian, but inadvertently showed the blood-colored tattoo on her forearm. After enjoying the host's reception, the Earl suddenly offered to take the other woman's daughter with him before leaving, and the old Briton did not dare to object, so he replied: "Allow me to prepare a banquet, when the Lord may bring back the little girl and her twelve maids-in-waiting." ”

The noble Breton knight gladly agreed, and three days later, in this manor, a wedding feast arrived as scheduled. The Count came with ten Breton knights, and because the Breton dialect was very similar to the Welsh language, the guests and the hosts were very merry, and a Welsh poet told the story of his fishing in the lake, describing how he stabbed an eel-poon at the bottom of the water with a monster like a calf, whose eyes were as nimble as rabbits, and he was so frightened that he rowed away. The poet went on to tell rumors of other elven ghosts, which fascinated both the Welsh and the Bretons.

According to the custom of the Britons, the Earl of Brian waited until the end of the song and dance before entering the "bride's" room, and under the influence of the spirits, he pushed the door to the rhythm of the harp, and there were more than a dozen beauties dressed in green robes and silk turbans, and the room shone brightly with jewels in the light of the fire. The Earl, visibly dizzy, had his belt untied by a maid and thrown to the candlestick, muttering the name "Megan" to his master's daughter.

There was a "plop" sound, and I don't know whose toes were tripped, and the count fell to the ground, and he struggled to get up, when suddenly the top of his head darkened, and a maid brushed off the robe that covered his upper body, and removed the turban with rings, revealing a man's face: the temples of this face and the beard under his cheeks were woven into delicate braids, but the expression was extremely hideous. Count Brian was so frightened that he tried to get up and shouted at the same time, but he was pressed to the ground by the samurai and could not move. A pair of pincer-like hands grabbed his throat, making him feel both suffocated and the urge to vomit.

After the Earl of Bryan's breath weakened, the Welshman pulled out his dagger, stabbed it through the left side of his neck, slashed to the right, and then forcibly tore off the earl's head, and in this pool of blood, twelve British warriors dressed in women's clothes rushed out of the house. The Bretons were still drinking ale, when they saw a mass of something fall on the table, and as soon as they saw what it was, the Welsh, who had come behind them, subdued them like falcons that pounced on rabbits, and in an instant slit their throats with daggers.

After daybreak, the Welshmen returned to the camp at Brut with their hunted heads, shouting victories with loud shouts, their long hair burning like flames in the fluttering leaves.

Roger of Montgomery did not wait for the report of the Earl of Brian, but waited for the bad news of Cornwall in the rear, he only had ten Brittany knights in his hands, and the rest were English soldiers from the southwest, and the invasion of the Harold sons directly cut off the port of Plymouth, making the territory west of Exeter a lonely enclave, in order to cope with this crisis, Roger began to ask Winchester for help. Subsequently, the English rebels of Hereford and Shropshire also began to attack Earl William, and Roger learned of Brian's death in a letter from Earl Hereford.

Winchester reinforcements soon arrived, and Roger left two hundred men to guard Bristol, and he quickly marched southwest with less than thirty knights, eight hundred English militiamen, and fifty archers, ready to rescue Tavistock.

The Normans marched west along the road, but it was raining and the road was very muddy, so in order to keep the army supplied, Roger ransacked many villages along the way and marched with 500 oxen all the way. A few days later, news came from the south that Exeter's army had attempted to rescue Tavistock, but had been stopped by the Danish-Gaelic army and had been wiped out. When Roger heard this, he decided to change course and march along the road near the coast, so as not to encounter the enemy in the wasteland east of Tavistock. So the Normans turned south, and marched westward with dust and flags, cattle and horses, and finally appeared in the south of the Irish.