The "Rock Castle" at 2052 Robinwood was built in 1894.  It was home to Michael Hehanan, a stone mason.  In 1896 the Hehanan's live-in domestic was Ellen Coyne.  John Breymann, of G. H. Breymann & Brothers, purchased the Hehanan property and employed architect A. Burnside Sturges, 334 The Spitzer, of 2062 Robinwood to make plans for its extensive remodeling according to an article in the January 26, 1900 issue of the Toledo News-Bee.