For ten years the brewery site was on the market, and by 1759 the lease was in the hands of a third Mark Rainsford, the grandson of Sir Mark Rainsford. Arthur Guinness was interested in the premises, and on 31 December 1759, the lease was signed over to Guinness for 9,000 years at £45 per year. The site has been the location of the Guinness brewery ever since. Guinness has expanded well beyond the original 4-acre lot, and has consequently bought out the property, rendering the 9,000-year lease from 1759 redundant.
