Pine Grove Cemetery Co. of Carroll County Po Box 393 Mount Airy, Maryland 21771-0393 EIN (Tax ID): 526044266 In the 1830′s, there was a settlement of houses and stores along Parr’s Ridge. During its early days, however, the settlement had no name. In the 1840′s, the Town’s few citizens felt the need for a church and education for their children, so in 1846, the Ridge Presbyterian Church was built and a private school was conducted in the basement for the next 20 years. This church building has been preserved and is now know as Pine Grove Chapel. Mount Airy’s historic Pine Grove Cemetery includes the graves of civil war soldiers, townspeople and the grave of the inventor of the first digital computer, John Vincent Atanasoff.