Question: Where was Janet Rogers' tribe historically based?

Context paragraphs:
Doeg people: The Doeg (also spelled Doages, Dogues, Taux, Dogi, Tacci, etc.) were a Native American people who lived in Virginia.  They spoke an Algonquian language and may have been a branch of the Nanticoke tribe, historically based on the Eastern Shore of Maryland.  The Nanticoke considered the Algonquian Lenape as "grandfathers".  The Doeg are known for a raid in July 1675 that contributed to colonists' uprising in Bacon's Rebellion.

Rockland the Opera: Rockland the Opera, commissioned by the Pine Mountain Music Festival (PMMF), is a historically based tragic opera in 14 scenes composed and written by Jukka Linkola of Nivala, Finland, first performed in 2011.  It is based on a long-forgotten miners' strike at the town of Rockland in Upper Peninsula of Michigan's Ontonagon County.  Striking Finnish miners were confronted by sheriff's deputies and two miners were shot and killed.

Steelend Victoria F.C.: Steelend Victoria Football Club (commonly known as Steelend Vics) were a Scottish football club based in the town of Steelend.  Members of the Scottish Junior Football Association, the club were historically based at Woodside Park in the village of Steelend near Dunfermline before moving in 2013.

Janet Rogers: Janet Marie Rogers (born January 29, 1963) is a Canadian First Nations Mohawk/Tuscarora writer from the Ontario Six Nations.

Northwest Passage (TV series): Northwest Passage is a 26-episode half-hour adventure television series produced by Metro Goldwyn Mayer about Major Robert Rogers during the time of the French and Indian War (1756–1763).  The show derived its title and the main characters Rogers, Towne, and Marriner from the 1937 novel of the same name by Kenneth Roberts, and from the 1940 MGM feature film based on the novel.  The scope of the novel was much broader than that of the series, and the second half of the book included an historically based attempt by Rogers to find a water route through North America as a "passage" to the Pacific Ocean.  This attempt, lending its name to the novel and used by Roberts as a metaphor for the questing human spirit, is referenced in the first episode.

Sappony: The Sappony or Saponi are  a Native American tribe historically based in the Piedmont of North Carolina and Virginia.  They spoke the Siouan Tutelo-Saponi language, which was related to the languages of the Tutelo, Occaneechi, Monacan, Manahoac and other eastern Siouan peoples.  Reduced by disease and warfare, the surviving members of the tribe migrated north to merge with other tribes.  They disappeared from the historic record as a tribe by the end of the 18th century and were considered extinct as a tribe.

Mohawk people: The Mohawk people (who identify as Kanien'kehá:ka) are the most easterly tribe of the Haudenosaunee, or Iroquois Confederacy.  They are an Iroquoian-speaking indigenous people of North America.  The Mohawk were historically based in the Mohawk Valley in present-day upstate New York west of the Hudson River; their territory ranged north to the St. Lawrence River, southern Quebec and eastern Ontario; south to greater New Jersey and into Pennsylvania; eastward to the Green Mountains of Vermont; and westward to the border with the Iroquoian Oneida Nation's traditional homeland territory.  As one of the five original members of the Iroquois League, the Mohawk were known as the Keepers of the Eastern Door.  For hundreds of years, they guarded the Iroquois Confederation against invasion from that direction by tribes from the New England and lower New York areas.  Their current major settlements include areas around Lake Ontario and the St Lawrence River in Canada and New York.

Mohegan: The Mohegan are a Native American people historically based in present-day Connecticut; the majority are associated with the Mohegan Indian Tribe, a federally recognized tribe living on a reservation in the eastern upper Thames River valley of south-central Connecticut.  It is one of two federally recognized tribes in the state, the other being the Mashantucket Pequot whose reservation is in Ledyard, Connecticut.  There are also three state-recognized tribes: Schaghticoke, Paugusett, and Eastern Pequot.

Quapaw: The Quapaw (or Arkansas and Ugahxpa) people are a tribe of Native Americans that coalesced in the Midwest and Ohio Valley.  The tribe historically migrated to the west side of the Mississippi River and resettled in what is now the state of Arkansas; this migration is the source of the tribe's name in their language which references going down the river.  The territory and state of Arkansas were named for them, as Europeans first learned their name as the "Arkansea", the term used by the Algonquian-speaking Illinois Confederation traders encountered to the east.  The Quapaw are among the Siouan-speaking peoples west of the Mississippi.

Sauk-Suiattle Indian Tribe of Washington: Sauk-Suiattle, or "Sah-Ku-Me-Hu," is a federally recognized Native American tribe in western Washington state in the United States.  The tribe historically lived along the banks of the Sauk, Suiattle, Cascade, Stillaguamish, and Skagit rivers, in the area known as Sauk Prairie at the foot of Whitehorse Mountain in the North Cascade Range.

Supporting paragraphs: Janet Rogers Mohawk people
Answer: the Mohawk Valley