I never said that all the Tarand grave people were Meryans. I said that people coming to Estonia from the east at Iron Age cannot be Finnic-speakers, because in their source region Meryan-related languages were spoken.
The N-man is OLS10 = Hiiemägi at Kunda, tarand III, burial 9.
Here are the isotopic results:
https://www.researchgate.net/publica...als_in_Estonia
They clearly show that the two individuals from Kunda tarands were immigrants from another area, while other Estonian samples were local people (with possible exception of Muuksi-5). Their origin is probably in the Northwest Russia, but because isotopic results are lacking there, direct comparison cannot be made. Still, at least the two Kunda tarand individuals do not seem to come from the west.