Rose Hill is a historic house built in the late 18th century near Port Tobacco in Charles County, Maryland, United States.

[1] It is notable for the following: Around 1780, Dr. Gustavus Brown bought and combined four tracts of land[4][5] from his neighbor; the property is now known as "Betty's Delight".

Combining this land with his own, he had built the house later named Rose Hill, which was completed in about 1783.

[9][10][11] The Maryland archives appear to show that Rose Hill Farm (with the manor) was sold to Ignatius Semmes, but do not provide a clear account, i.e., whether it was to the elder Semmes (born 1773[12]), or the younger (born 1821[13]), and when this took place (from 1804 to the early 1820s).

Rose Hill Road (which is outside Port Tobacco) passes a few widely scattered houses, most notably the home of Thomas Stone, youngest signatory of the American Declaration of Independence.