William McCormick Blair (1884-1982)
of 1416 Astor Street, Chicago & Lake Bluff, Illinois; of William Blair & Co., Bankers
He and his wife lived between "Blair House" at 1416 Astor Street, Chicago (a wedding present from his in-laws in 1912), and their David Adler-designed summer home "Port of Call" at Lake Bluff (see images).