Today certainly isn't the weather to "go grave hunting", we are in the middle of a snow storm and the main roads in this very large cemetery will be terrible, the secondary roads completely impassable. I don't see those people in the list of Albany Rural burial cards on Ancestry, but I only took a quick look.
Do you have any idea when they died/were buried?
I live less than two miles from the cemetery and have looked for graves for others before and am willing to help, but not till spring. Have you tried calling the cemetery office?