Nevertheless, four days later, an alleged conspiracy against the new king was uncovered, and many of the leading Italo-Norman political figures were arrested and sent to prison in Germany, including William and his family.
Namun demikian, empat hari kemudian, dugaan konspirasi terhadap raja baru terungkap, dan banyak tokoh politik Italo-Norman terkemuka ditangkap dan dikirim ke penjara di Jerman, termasuk Gugghiermu dan keluarganya.