[2] Haruo Oi, an ethnologist, believes the Menasunkur Ainu at the time of Shakushain was more limited to only the Shizunai and Monbetsu river basins.
[3] Nearly a century following Shakushain's Revolt, Kumajiro Uehara, a Hokkaido historian, documents the Ainu from Hiroo to Nemuro were called the "Shimenashunkuru".
[4] Additionally, a distinct type of chashi (Ainu fort) was found only in the areas of Menasunkur.
[3] The first records of the Menasunkur Ainu come from a foreigner Spaniard, Angelis, who records in 1618 the shiploads from Menashi "to the east of the Matsumae" load dried salmon, herring, and sea otter skins, not dissimilar to ones found in Europe.
Slowly, the distinctions between the various Ainu subgroups blurred as Japanese colonization of Hokkaido continued steadily, and the descendants of the Menasunkur Ainu continue to live in the historically Menasunkur-populated regions of Hokkaido.