Can you pl provide a link to the passenger list.
I can see two sailings for this clipper ship in 1861 on one listing (March & December), and on another just one listing (March 1861) showing that the ship seems to have been quarantined at Melbourne because of small pox on board.
Where did the passenger leave from and where did he land in Aus please?
Link about this clipper ship
https://en.wikipedia.org/wiki/Donald_McKay_(clipper)
John Grenham has useful info about the name Guthrie and variations in ireland
https://www.johngrenham.com/findasurname.php?surname=guthrieThe three names from Tipperary came from Ardfinnan
https://www.johngrenham.com/c_parish/c_parish.php?county=Tipperary&surname=guthrieThese three names are on Griffiths 1852 (Tipperary south riding) are Thomas, William and Richard
From Ardfinnan
When you look at the 1901 census the oldest Guthrie there is only 45 so there may have been emigration.
https://www.census.nationalarchives.ie/pages/1901/Tipperary/Tullaghmelan/Ardfinnan____Pt__of_Spitalland_/1707563/The census also throws up another couple of localities that might be useful and that is Tullaghmelan
https://www.townlands.ie/tipperary/tullaghmelan1/and another
Spitalland
https://www.townlands.ie/tipperary/clanwilliam/tipperary/spitalland/Ardfinnan
https://www.townlands.ie/tipperary/ardfinnan1/