Key legal question
Which cantonal guardianship authority was territorially competent to open guardianship proceedings for X.
Extracted holding
The competent authority was the guardianship authority of Neuenhof, because the opening of proceedings occurred only after X. had established his residence there.
Extracted reasoning
Under Art. 376(1) ZGB, competence follows the person's domicile at the time the guardianship proceedings are opened. The mother's informal discussion in Dietikon on 10 July 2001 did not amount to a formal opening request. The formal request was made only on 3 September 2003, when X. had long been living in Neuenhof and had objectively established domicile there.