On the January 11, 1669, 500 acres (2.0 km2) of land called "Iron Mine" were patented from George Yate to Richard Snowden Sr. and Thomas Linthicum, "farmers", for 11,000 lb (5,000 kg) of tobacco.
[2] In 1685 King Charles (via Lord Baltimore) granted Richard Snowden Sr. 1,976 acres (8.00 km2) of land on the Patuxent River (Robinhood's Forest).
In 1724, Richard Snowden sent workers to build a log core that became "Greenwood", north of Brookeville, Maryland establishing Sandy Spring's and Montgomery County's oldest surviving residence.
[4] On May 19, 1729, Richard Snowden, Peter Hume, and Daniel Dulaney the Elder advertised as agents for the sale of "two hundred choice slaves" newly arrived in the South River.
)[3]: 217 A 1753 letter by Charles Carroll of Annapolis noted that Snowden's forge was the only one in Maryland to have ore near navigable waters (i.e. the Patuxent River).
[8][9] In 1737 Snowden partnered with his son-in-law James Brooke to build a gristmill and biscuit factory on the Hawlings River.