What is Bahlakoana history

I was informed that there were two rival kings or chiefs. The subjects of the allegedly cruel chief sought refuge from the supposedly kind rival.
On enquiry during introduction/request they said they come from โ€“ โ€œre tlha koaโ€ โ€“ we are from there! Response โ€œoh! Netlha kwa!โ€
Sorry, my Sotho is limited.
Therefore anyone seeking โ€œasylumโ€ (doesnโ€™t know their lineage) is welcome. This was the reason I was given for someone who adopted his brothers surname & clan name.