The first land patents in the Rockville area were obtained by Arthur Nelson between 1717 and 1735. Within three decades, the first permanent buildings in what would become the center of Rockville were established on this land. Still a part of Prince George's County at this time, the growth of Daniel Dulaney's Frederick Town prompted the separation of the western portion of the county, including Rockville, into Frederick County in 1748.
Being a small, unincorporated town, early Rockville was known by a variety of names, including Owen's Ordinary, Hungerford's Tavern, Daley's Tavern. The first recorded mention of the settlement which would later become known as Rockville dates to the Braddock Expedition in 1755. On April 14, one of the approximately two thousand men who were accompanying General Edward Braddock through wrote the following: "we marched to Larance Owings or Owings Ordinary, a Single House, it being 18 miles and very dirty." Owen's Ordinary was a small rest stop on Rock Creek Main Road (later the Rockville Pike), which stretched from George Town to Frederick Town, and was then one of the largest thoroughfares in the colony of Maryland.
On September 6, 1776, the Maryland Constitutional Convention agreed to a proposal introduced by Dr. Thomas Sprigg Wootton wherein Frederick County, the largest and most populous county in the Maryland, would be divided into three smaller units. The southern portion of the county, of which Rockville was a part, was named Montgomery County. The most populous and prosperous urban center in this new county was George Town, but its location at the far southern edge rendered it worthless as a seat of local government. Rockville, a small, but centrally located and well traveled town, was chosen as the seat of the county's government. Thereafter, the village was referred to by all as Montgomery Court House.
In 1784, William Prather Williams, a local landowner, hired a surveyor to lay out much of the town. In his honor, many took to calling the town Williamsburgh. In practice, however, Williamsburgh and Montgomery Court House were used interchangeably. On July 16, 1803, when the area was officially entered into the county land records, however, the name used was "Rockville," believed to be derived from Rock Creek. Nevertheless, the name Montgomery Court House continued to appear on maps and other documents through the 1820s.
By petition of Rockville's citizens, the Maryland General Assembly incorporated the village on March 10, 1860. During the American Civil War, General George B. McClellan stayed at the Beall Dawson house in 1862. In addition, General J.E.B. Stuart and an army of 8,000 Confederate cavalrymen marched through and occupied Rockville on June 28, 1863 while on their way to Gettysburg and stayed at the Prettyman house. Jubal Anderson Early had also crossed through Maryland, on his way to and from his attack on Washington.


The grave site of F. Scott Fitzgerald
is located at St. Mary's Church, in the center of Rockville, and
there is a small theater next to Glenview Mansion in the Civic
Center Park named after him. The alternative rock band R.E.M