The present mill is located on a tract that was patented originally by the McKemson Brothers in 1771, a 115 acre tract known as "Black Rock".

The first mill was built on this site between 1771 and 1781. At the latter date, Matthew Wiley Sr., the son of David Wiley, acquired this property.

The Wiley family had operated mills in Chester Co., Pa. Matthew Wiley constructed this mill in the early 1800's, giving him a total of 3 mills along the tributaries of Deer Creek,(including Ivory Mills and Amos Mills).

The property was passed from the elder Matthew to his son, Matthew, in 1840, and then to George N. Wiley in 1878. The mill was used for lumbering and cider making, as well as for flour production.

The current owner called this building the carriage house; it is rented out as various apartments.

Originally Upper Wiley Gristmill located in the northwest portion of Maryland's Harford County, as it appeared in the 1800s. Shown is the creek flowing from left to right, behind the outcrop behind the mill is the log-crib dam and at least 2 original stone cabins. The road comes in to the mill from the right. Coming in from the left is the headrace from the dam with its control gate and flume to the mill's 18 foot overshot waterwheel. On the right side, at the peak of the roof can be seen the catshead which protected grain from the elements as it was being hoisted from a wagon or cart.

This is a utility shed/garage. Notice the close end that was arched before being enclosed. It is similar to an old Amish or Quaker buggy shed. The carriage shed is in the background.

The owner, who's livelihood is in remodeling, has done many repairs to the structures that make up the mill comlex, with more planned. The owner lives in the mill/log structure, while his parents, live in the millers house pictured above.