By profession, Patrick Barry’s father was a teacher and a principal. At heart, however, he was an entrepreneur.  While teaching, he built a fleet of ice-cream trucks, Pat’s Ices, and had a side hustle buying and selling Honda 50s. Every weekend, he would trawl through the classifieds magazine Buy & Sell to identify old fridges that could be refurbished and sold on to landlords — at a higher price.  He eventually brought his profession and his entrepreneurial passion together to launch The Foxrock Institute, a grinds school in Deansgrange in south Dublin.  At its peak, more than 60 teachers delivered…