Howard dates the treaty to 1036, whereas other historians date it to 1039 and believe it freed Harthacnut to launch an invasion of England. Exiled in Bruges, Emma plotted to gain the English throne for her son. She sponsored the Encomium Emmae Reginae, which eulogised her and attacked Harold, especially for arranging the murder of Alfred Atheling (the younger of Emma's two sons by Æthelred) in 1036. The work describes Harthacnut's horror at hearing of his half brother's murder, and in Howard's view, was probably influential in finally persuading the cautious Harthacnut to invade England. According to a later edition of the Encomium, the English took the initiative in communicating with Harthacnut in 1039, possibly when they became aware that Harold had not long to live. Return to England Harthacnut travelled to England with his mother. The landing at Sandwich on 17 June 1040, "seven days before Midsummer", was a peaceful one, though he had a fleet of 62 warships. Even though he had been invited to take the throne, he was taking no chances and came as a conqueror with an invasion force. The crews had to be rewarded for their service, and to pay them, he levied a geld of more than 21,000 pounds, a huge sum of money that made him unpopular, although it was only a quarter of the amount his father had raised in similar circumstances in 1017–1018. Harthacnut had been horrified by Harold's murder of Alfred, and his mother demanded vengeance. With the approval of Harold's former councillors, his body was disinterred from its place of honour at Westminster and publicly beheaded. It was disposed of in a sewer, but then retrieved and thrown in the Thames, from which London shipmen rescued it and had it buried in a churchyard. Godwin, the powerful earl of Wessex, had been complicit in the crime as he had handed over Alfred to Harold, and Queen Emma charged him in a trial before Harthacnut and members of his council. The king allowed Godwin to escape punishment by bringing witnesses that he had acted on Harold's orders, but Godwin then gave Harthacnut a ship so richly decorated that it amounted to the wergild that Godwin would have had to pay if he had been found guilty. Bishop Lyfing of Worcester was also charged with complicity in the crime and deprived of his see, but in 1041 he made his