Realising that a treaty in English could not be understood, debated or agreed to by Māori, Hobson instructed missionary Henry Williams and his son Edward Marsh Williams, who was more proficient in "Te Reo", the Māori language, to translate the document, and this was done overnight on 4 February. The translation of the treaty was reviewed by James Busby, and he proposed the substitution of the word "whakaminenga" for "huihuinga", to describe the "Confederation" or gathering of the chiefs. This no doubt was a reference to the northern confederation of chiefs with whom Hobson preferred to negotiate, who eventually made up the vast majority of signatories to the treaty. Hobson believed that elsewhere in the country the Crown could exercise greater freedom over the rights of "first discoverers", which proved unwise as it led to future difficulties with other tribes in the South Island.