Hi Elmca - Looks like we may have a connection here
Elizabeth McAlpine born 1792 Parents Willian McAlpine and Isabel McFarlane.
My connection is through Isabel (1779) who was Elizabeth's elder sister, she married James Henderson, and was my g/mother x3.
Back to Elizabeth - She died at Burnside Cottage Kilmadock 21 Mar 1870. GRO362/00 0018 Widow of Walter, Informant was her son John.
But like you am scratching to find where any of the McAlpine's are buried

As a matter of interest try googling "The Dogs of Menteith"home page, interesting reading

try clicking on to the McAlpine name as there is quite a lot of info.
If you like will PM you with my e.mail adds.
All the best Patvp