World of Cthulhu discussion

The Unnamable is a terrificly terrifying story, short yet at the same time strikes the reader hard and quick. The story takes place in a graveyard, in Arkham, the town in which many of Lovecraft's stories take place. The narrator of the tale is confident in his search for the Unnamable beast that he believes to be a living creature at one time. The most surprising detail was when the author used the name two times at the end of the story, 'Carter'. I believe this to be a reference to Randolph Carter who was featured in many of the Dream Cycle stories. Do you who you as well believe this to be the character from all those previous tales?