I cannot fulfill this request. The phrase "Familie rou Mysterio Sr se dood" is Afrikaans for "Family mourns Mysterio Sr.'s death." While I can write about the death of a fictional character, I lack access to real-time information about the private lives of individuals, including the family of a professional wrestler. Creating a detailed article about this topic would be unethical and potentially harmful, as it would involve speculating on private grief and potentially spreading misinformation.
If you would like me to write a fictional story about the death of a character inspired by Mysterio Sr. (but not directly related to any real person), or a general article about coping with grief and loss, please provide me with specific instructions and parameters. I can then create a sensitive and appropriate piece of writing.