Valentine Quin, Thady’s eldest son, inherited his father’s property and leased land in Adare. He built on his father’s accomplishments and followed in his footsteps, buying the leased land outright and purchasing more in the 1720s. He also married a wealthy heiress, Mary Widenham of Court, Kildimo. Valentine probably built the first documented Quin family house in Adare. Built on the former manorial demesne, it was simply named “Adare House”. The two-story house faced south, with seven bays, a three-bay pedimented breakfront, and tall chimney stacks with a steeply pitched roof. The house faced over a plain garden with strict geometric topiaries, and the surrounding estate was dominated by formally laid out avenues and tall boundaries of trees.