When have some cultures changed a person’s name after puberty or an important achievement?

In many cultures, the practice of changing a person's name at a specific life stage or following a significant event is a recognized tradition. While this is not a standard feature in modern European and American naming conventions, it is a regular practice among some peoples.1

When an individual reaches a milestone such as puberty or achieves a notable exploit, their original name may be replaced. This transition often occurs because the person has attained sufficient maturity to participate in choosing their own name. Because the individual has developed a distinct sense of self by this time, the new name is frequently descriptive of their appearance or character, or it may be derived directly from the exploit they performed.1

In these contexts, the goal remains to select a "good" or auspicious name that aligns with the individual's culture and religious beliefs.1