When the writers began to outline the story, the main character was British. Later they decided to move away a little from the context of the English in 19th century Argentina; it occurred to them that the character could be Danish and started to think of Viggo Mortensen as a possible choice for the lead role. They continued rewriting the film with him in mind until Mortensen himself also began to get involved and to provide lots of ideas, thus leading to his casting.