Rose Hill Timeline

  1. Current Parks and Recreation Openings and Closings

    Frederick County Parks and Recreation is continually updating cancellations and closings. Please understand that these decisions are evolving as new information and/or directives come through State of MD, FCG, and FCPS. Click here for the most up to date information
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View the interactive story map of Rose Hill Manor; The Land and its Owners HERE

Land & Ownership History


  • 1727 - Benjamin Tasker gets 7,000 acres from Lord Baltimore, which is later sold to Daniel Dulaney
  • 1745 - Daniel Dulaney lays out the plan for Frederick city within the land grant known as Tasker's Chance
  • 1748 - Hans Peter Hoffman purchases from Daniel Dulaney land, that was later to be known as Rose Garden, along the old Georgetown Pike
  • 1764 - George Hoffman inherits Rose Garden
  • 1778 - Thomas Johnson purchases land and renames it Rose Hill
  • 1788 - Thomas Johnson gives land to his daughter, Ann Jennings, on the eve of her wedding to John Colin Grahame
  • 1789-1792 - John Colin and Ann Jennings (Johnson) Grahame Build the manor house
  • 1793 - Grahame purchases Indian Fields, the 202 acres adjacent to Rose Hill
  • 1800 - Thomas Johnson is living at Rose Hill
  • 1833 - Colonel John McPherson, nephew-in-law, purchases Rose Hill following John Colin Grahame's death in order to help Ann Jennings (Johnson) Grahame stay on the property until her death in 1837
  • 1837 - William Slater, owner
  • 1843 - George Slater, owner
  • 1845 - John Wilson, owner
  • 1853 - David O. Thomas, owner
  • 1853 - David O. Thomas, owner
  • 1893 - Margaret (Thomas) Myer, owner
  • 1906 - Noah Cramer, owner
  • 1927 - James Cramer, owner
  • 1957 - Alice (Cramer) Bowman, owner
  • 1964 - 50 acre parcel sold to Frederick County for a school site

Park & Museum History


  • 1968 - Frederick County Commissioners purchased remainder of Rose Hill property (43.3 acres). Funding is received from Program Open Space and Frederick city to establish Rose Hill as the 1st County Park.
  • 1971 - Rose Hill Manor is listed on the National Register of Historic Places
  • 1972 - Rose Hill Manor Park Master Plan Committee develops and adopts a Children's Museum Program for education of elementary school-aged children. The Children's Museum Advisory Board was established and the Manor House 1st floor opened for tours.
  • 1975 - Manor Gardens opens
  • 1976 - Carriage Museum (Robert H. Renneberger collection) opens
  • 1977 - Log Cabin exhibit opens; Farm Museum Association is established
  • 1980 - Blacksmith Shop exhibit opens
  • 1982 - Manor upstairs Master Bedroom and Governor's Study exhibits open
  • 1984 - Master Plan Revision
  • 1986 - Manor upstairs Domestic's Bedroom exhibit opens
  • 1988 - All Manor upstairs, including the Children's Bedroom exhibit, opens

Thomas Johnson's Life History


  • 1732 - Born in Calvert County, Maryland
  • 1753 - Admittance to the Maryland Bar
  • 1760 - Admittance to the Frederick County Bar
  • 1762 - Delegate to the Provincial Assembly in Annapolis on the Committee for the Construction of the Maryland State House
  • 1766 - Marries Ann Jennings
  • 1774 - Delegate to the 1st Continental Congress
  • 1775 - Nominates George Washington to become the Commander in Chief of the Continental Army
  • 1776 - Becomes Commander of the Maryland Militia
  • 1777 - Elected by Congress as Maryland's 1st Governor
  • 1778 - Purchases 225 acres of land known as Rose Garden in Frederick and changes the name to Rose Hill
  • 1779 - Purchases land north of Frederick, named Richfield, where he builds his Frederick County home
  • 1780 - Becomes Member of the Maryland State Legislature
  • 1785 - Becomes President of the Potowmack River Project
  • 1788 - Gives Rose Hill to his daughter
  • 1791 - On the Board to develop the Federal city; he was the 1 to 1st recommend that the city be called Washington
  • 1791 - Becomes an Associate Justice of the Supreme Court and authors the 1st opinion
  • 1800 - Gives a eulogy for George Washington at the Frederick memorial service on February 22, which becomes his last act in public service
  • 1800 - Listed on the 1800 census as living at Rose Hill Manor in Frederick with his daughter and her family
  • 1819 - Dies at age 87 at Rose Hill and is buried in Mt. Olivet Cemetery in Frederick, MD