History:
Nirwals spread likely shows migration patterns. Forced moves, maybe due to hardship or political trouble, scattered families. People also moved willingly, seeking better lives or escaping problems. The surname itself might have changed slightly in different places. To know the exact paths and timing, wed need family history info, old maps, and census data.
Description:
I need more details to help you.
However, based on how names usually change over time, we can guess at some possibilities. A simpler version might be Nirwa, losing the final l. A slight change in pronunciation could give us Neerwal. Adding something to the end, like Nirwalia or Nirwalsingh, is also common.
