Founded in 1886, Weems is an unincorporated community in Lancaster County in the U. S. state of Virginia. Weems shares the-438 Code With Irvington, Virginia.Christ Church, physically located in Weems, was designated a National Historic Landmark in 1961. Corotoman was listed on the National Register of Historic Places in 1970.Berkeley, E., Jr., & the Dictionary of Virginia Biography. Robert Carter.. In Encyclopedia Virginia. Retrieved from http://www.EncyclopediaVirginia.org/Carter_Robert_ca_1664-1732.