Key legal question
Whether the heirs had already accepted the inheritance outright by intervening in the estate under Art. 571 ZGB.
Extracted holding
The heirs' conduct, as established by the cantonal findings, did not amount to intervention in the estate; they therefore did not lose the right to renounce.
Extracted reasoning
Requesting an heir certificate, when done by the widow solely as will executor for estate administration, was a management act and not a final acceptance. Other alleged acts could not be considered because they lacked factual findings.