The Wincopin Neck land patent contained the Guilford Mill and a few smaller quarries. But an adjoining land patent called Jones Fancy, containing 131 acres, is where the first and largest commercial quarrying in Guilford began in 1834 according to the Maryland Geological Survey (Merrill and Matthews 1898).

In the early 1830s, True Putney and Hugh Riddle began working the Waltersville quarry near Woodstock, Maryland, to provide granite for the B&O railroad (Williams 1893).  In 1835, Putney and Riddle took out a 25 year lease on the Waltersville Quarry (now Granite, Maryland) the same year he purchased the Jones Fancy land from John Warfield that contained the larger Guilford. During this time, due to the operation of both the mills and the quarry, the area became known as Guilford Factory.  True Putney and Hugh Riddle operated the Woodstock and Guilford quarries until about 1840 when they ran into legal troubles. 

Even local resident Peter Gorman, the B&O railroad contractor and father of US Senator Arthur Gorman, operated a quarry along the Middle Patuxent River for a short time during the 1840s (see article below) before shifting his attentions to Woodstock.  In the 1860s, Arthur Gorman and others requested, and paid for, a road to be built connecting the Columbia Road to the Guilford Factory – what is now known as Murray Hill Road (Madaras 1985).

Getting the quarried stones and mill products to market required transporting the products to the new B&O Savage train station starting in 1835 which was about 4 miles away.  In the 1850s, Henry A. Penny, a local farmer who eventually owned much of the land for the quarry operations, ran a business transporting the quarry blocks by ox cart to the train station.  He must have followed the river trail downstream to Savage to avoid the steep hills on Old Guilford Road.  Despite the promise of rail service to Guilford as early as 1835, the train did not come to Savage Mill until 1887 which again at that time sparked new hope of train service and the revival of the quarries.

Like the mill ownership, the quarries saw different management until Howard Granite Company, Guilford and Waltersville Granite Company, Guilford Granite Company and the Maryland Granite Company started operations in the 1890s and early 1900s.  It was the fulfillment of the promise of a railroad extension from Savage Mill that brought renewed interest in the Guilford Quarries and finally in 1902, the Maryland Granite Company needed the train line from the quarries to Savage Mill and on to the main Washington Branch line of the B&O.  This train line, the Patuxent Branch (for which we get the name for the Trail), operated from 1902 until 1928 with several business stops between Savage Mill and Guilford Factory.

Please see Did You Know #3 - The Guilford Quarries Operated Between 1834 and 1917? for additional details on the quarries. 

Sources: 

Madaras, Larry. 1985. A History of Murray Hill and Gorman Roads. Unpublished. Howard Community College.

Merrill, George P. and Edward B. Mathews. 1898. Volume 2. Part II. The Building and Decorative Stones of Maryland. Maryland Geological Survey. The Johns Hopkins Press, Baltimore.  P. 157  Downloaded from Google Books

Williams, H.G. 1893. Maryland, Its Resources, Industries and Institutions. Prepared for the Board of World's Fair Managers by Members of Johns Hopkins University and Others. Chapter IV Mines and Minerals, page 126. Downloaded from the Haith Trust and Google Books.

Other documentation comes from deeds available in the Maryland Land Records Website, a Chancellery record from the Maryland State Archives website, and newspaper articles from Newspapers.com and Genealogy Bank].

High Court of Chancery of Maryland 1846-1854

Volume 200, Volume 1, Page 262 

http://aomol.msa.maryland.gov/000001/000200/html/am200a--262.html