Hi Embodied,
No one except a Buddha would know for certain if one were a sotapanna or not. Sometimes not even that person would know if he was a sotapanna himself.
There were sotapannas who were married and had 5-7 kids, some married to hunters, others who were kings, princes, princesses, millionaires, businessmen and even prostitutes. So one will never be able to know by one’s behaviour.