One autumn while he was at Vingulmark, Halvden the Black was surprised by an attack lead by the brothers Hysing and Helsing, the sons of Gandalv. Halvdan lost many of his men, and was forced to flee into the woods. Incensed by this unprovoked attack, Halvdan gathered up all the folk who would join him and set out after the brothers. The two forces finally met at a place called Eid. Hysing and Helsing were both killed, but a third brother, Haki, escaped. Halvdan had made his point and regained his lands and once again sought peace, and a wife and successor.
Halvdan next became entranced by the daughter of Sigurd the Hart. Her name was also Ragnhild and he soon married her. Ragnhild came from good stock. Her mother was Torny, the daughter of King Klak - Harald of Jutland, and her aunt was Tyri, Queen of Denmark, who had married Gorm the Old. ( The story differs a little in Fagrskinna. Ragnhild is the daughter of Sigurd Snake in the Eye in that tale ).
Queen Ragnhild was a very wise woman who had the dreams of a Seer. In one dream she was standing in her garden, when she reached down and pulled a thorn out of her gown. As she held it in her hands it began to grow. She set it down and it became a huge tree right before her. The roots became embedded deep in the ground, and the branches, whose edges were white as snow, reached out over all of Norway, and beyond.
When King Halvdan heard of his wife's dream he called upon Torleiv the Wise to help interpret its meaning. Torleiv told King Halvdan that when he wished to know the meaning of something he went and slept in a pigsty, and then the answers came to him in a dream. King Halvdan took Torleiv's advice, and did as he was instructed. He went to a pigsty lay down and at once fell asleep and started to dream. He dreamed that he had a full head of hair, flowing and full of locks. Some flowed all the way down to the ground, while others stopped at various points along the way. These locks were of many colors, but there was one curly lock that stood out above all others. When Halvdan awoke he went straight to Torleiv the Wise and described his dream to him. Torleiv listened and when Halvdan was done told the king that from him would spring a great race who would rule the country with glory. But one man would be greater and more glorious than all the rest. Both of the above dreams are told as prophecies of the coming of his second son, Harald, better known as Harald Fairhair, who would one day unite Norway and rule over the entire kingdom.
Whether it was because of the peace, or the prophecies, I do not know, but King Halvdan became a just man . He made fair laws, and made sure that everyone, including himself followed them. He made a code of law known as the Sak - Tal which fixed penalties for every man which were tied to his birth and rank. He became a king who was admired by his people for his fairness and good will.
Halvdan and Queen Ragnhild, had a male child, just as the prophecy had told them. They named this child Harald, and had him baptized. Harald grew to be a big man of great strength and will, who was intelligent, as well as good in all sports. It is written in Heimskringla that his mother loved him very much, but that his father loved him less. Snorri unfortunately leaves out why his father did not love him as much, but possibly there was a little jealousy between father and son.
King Halvdan had his Yule feast in Hadeland one winter. One day he drove from the feast on his sled across a frozen lake that had started to thaw and had patches of weak ice. This lake was called Lake Rand. It is said that during the winter cattle had been branded on the ice, and that during the branding the cattles dung had become embedded into the ice weakening it. When the king rode over this weakened ice it gave way and the great king fell through. He and many of his men were drowned. He was only forty years old that year. King Halvdan the Black was so well loved and respected that when his body was brought to Ringerik, men from Raumarik, Vestfold, and Hedemark, all demanded the body. They all wanted their king to lay in a mound in their district because they felt if his body rested in their land they could expect mild winters, and long growing seasons. Finally, after much wrangling, it was agreed to divide the body into four parts. One for each district. Only the head resides today in Ringerik.
Go with Odin's wisdom, Freyja's love, and Thor's protection !