From surnamedb.com :
"Recorded as Hinckley, Hinckly, Hinkley, and Inchley, this is an English locational surname. It originates from the town of Hinckley in the county of Leicestershire, the place being first recorded in the famous Domoday Book of 1986 as Hinchelie..."
When the buzzards return to Hinckley in northeastern Ohio, it's a sign of spring. Wikipedia has a write up: "A post office called Hinckley has been in operation since 1825. The community has the name of Judge Samuel Hinckley, a land speculatior from Massachusetts. A variant name was Hinckey Center..."