The cemetery near this note is known on Findagrave only as the Adams Cemetery: https://www.findagrave.com/cemetery/2149457/adams-cemetery - it does have another name, but it's Tuff Cemetery. I'm not sure if you mean to imply that McGarr Family Cemetery is another name for this same location, but I can't find record of it. Even in the memorials there are dozens of Adamses and only one single McGarr, who was buried there very recently in 2010.