Genann arrived in Ireland with his brother Rudraige on a Friday in August, they landed at Inber Domnann.

There were over two thousand people in their retinue. Genann took North Connaught as his portion while Rudraige went north and took Ulster. 

They were known as the 'men of the earth' because of the plough marks they made in it.  They were probably arable farmers, sowing and planting crops.  Genann ruled Connaught for four years then he went to Fremaind where he contracted the plague and died like his brother Gann.