A person has encountered a potential issue with a grandfather's will where their 'pet name' was used instead of their legal name. Legal experts suggest this could cause problems when enforcing the will. To resolve this, it's advised to consult a local lawyer, prepare a notarised affidavit confirming both names belong to the same person, and potentially publish a notice in local newspapers. While the testator's intention is key, proving identity and addressing the name discrepancy proactively is recommended.