The Sea's Edge

In 1030 CE, King Cnute sends Harald, his middle son, to the Kingdom of Dublin to meet with his Norse-Irish allies. He is to coordinate an invasion of the northern Welsh kingdom of Gwynedd, to replace King Rhydderch who is growing too powerful on England’s borders. Harald is reluctant to be involved in affairs of state, but agrees to go, even though his beloved wife, Selia, is unwell. Harald tells Selia he will not have to take part in the fighting.
To appease the king of Dublin, Harald commits to leading their combined forces in the attack on Wales. The plan is to replace King Rhydderch with Iago, the weaker King of Anglesey. The more Harald learns of these monarchs, the more his allegiance leans toward the man he has been sent to kill.
Will Harald unseat a strong and just ruler to carry out his father/king’s commands, or will he tread a more righteous road, which will destroy the life he and Selia have built in England.