At the moment - it is not possible to rename your guild.
If you want to change your guild's name - your best option is:
- To destroy the guild (note that monument and everything placed on the same tile and above as monument will be destroyed)
- Create a new guild with the desired name
- Place new guild monument in the same location as your previous one
We are working on implementing this functionality.
Please, contact us at firstname.lastname@example.org if your character's last name is "RECREATE ME" with an e-mail titled "RECREATE ME character".