This typical Irish country residence was constructed in 1857 by James Healy, a well-educated gentleman who left County Cork in 1835 and came to the United States by way of Canada. At that time, the Wisconsin Central Railroad was building its roadbed through the Healy farm, and the stones excavated by the railroad crew were used to construct the house. Healy and his wife Catherine had thirteen children, eleven of whom survived infancy. He was an active member of the Town of Granville’s government, serving as Justice of the Peace, Town Clerk, and Superintendent of Schools. In 1861, Healy sold the house to John Diderrich and moved to Windham, Iowa. The Diderrichs added a second floor to the north portion of the house in the late 1800s. At the time of designation as a Milwaukee County Landmark, the residence was still occupied by the third generation of the Diderrich family. The property was designated for its historic significance.