I visited the Oak Grove Cemetary in Glenwood, Md on April 9, 2001. I know I missed some Linthicums because I got a tombstone for John Wesley Linthicum when I was looking for John Warren Linthicum. The cemetary is just off of Route 97 in western Howard County. Union Chapel Road is the tee street. The Linthicums I found were just south of the gravel road in the middle of the cemetary.
I found the following tombstones: John W. Linthicum B. March 15, 1821, d. June 23, 1904 Samuel D. Linthicum died Sep ?? 1882 Mother Ann Linthicum relief of Rev. Hezekiah Linthicum, b. Feb. 12, 1799 d. Feb. 1, 1889 Our father Rev. Hezekiah Linthicum, b. Feby 21, 1794, d. Oct 30, 1871 Hezekiah Linthicum, b. Feb 28 1830, d. April 6, 1872 the above grouped together, the below grouped separately a row or more away. Lloyd W. Linthicum b July 3, 1817, d. Dec 31 1899 Mary E. wife of Lloyd W. Linthicum b. Jan 3, 1821, d. May 30, 1902 (could be Mar.) Margaret Linthicum 1856 1951 (double triangle symbol between dates) M. Lucinda Linthicum died Sep12 19?0?8, aged 83 years Ellen S. Linthicumdied Dec. 25, 1911 in her 93rd year Elizabeth A. Linthicum, died July 23, 1917 in her 92nd year Dorsey, husband of Mary A. Linthicum Jan 14, 1918 aged 78 years
M. Lucinda is directly in front of Rev. Hezekiah Ellen S. in front of Ann Elizabeth in front of John W. Dorsey in front of Samuel D. Hezekiah is to the left of Rev. Hezekiah