From Ohio History Central
Philip Grandin was an early resident of Cincinnati. He arrived in the city in the first years of the 1800s. He owned several hundred acres of land near modern-day Grandin Road in Cincinnati. The road was named in Grandin's honor. He was a real estate speculator and sold much of his land for a great deal more than he had originally paid for it. He also partnered with John Piatt in a bank as well as a steamboat business. By the 1870s, Grandin's former land had become one of the finest and wealthiest neighborhoods in Cincinnati.