John O’Sullivan’s parents Christy and Eileen moved from their 25-acre farm in Beaufort to a 68-acre farm in Castleisland in 1969. “It’s the kind of land that looks great in this weather,” says John, “but the soil is heavy, so high rainfall is not to its liking.”

A second farm of 71 acres was bought in the early 1970s. Interest rates rocketed, but his parents managed despite the imposition of milk quotas. This was also the era of the “milk wars” as co-ops fought for milk supplies.