Carrownaganogh townland and a placename “Whitestone”

I have two questions I would love some help with.   Where can I find the listings for Carrownaganogh townland in the tithing valuation?    
 Below is a link to info about Carrownaganogh showing it is in Kilmacrenan parish   And below that a link showing all townlands in Kilmacrenan for the tithe valuation    Nothing similar to Carrownaganogh is listed   I also searched neighboring parish Mevagh with no success    Would Carrownaganogh have been combined with a neighboring larger townland?

https://www.townlands.ie/donegal/kilmacrenan/kilmacrenan/loughkeel/carr…

http://titheapplotmentbooks.nationalarchives.ie/pagestab/Donegal/Kilmac…

2- my second question is- is there a place known as Whitestone?  I have an ancestor High Gallagher Deeney.  (Father James Deeney, mother Bridget Gallagher. His middle name is Gallagher).   The family appears to be from Currin, Kilmacrenan.  But his obituary states he was from Whitestone, Donegal.    (The family immigrated to Ohio when he was a young boy).    But I cannot find any such location as “Whitestone” anywhere in Donegal. I know there are sometimes local place names representing areas even smaller than subtownlands and am wondering if this is the case?

thank you for any help. ( I’m fairly certain through traditional research and dna connections that the Bridget Gallagher mentioned is daughter to my 5th great grandfather Gallagher.  Trying to put all the pieces together)

David Kane