Answer:

seneca

Answer	Crossword Clue
SENECA	Iroquois Confederacy member
SENECA	New York native
SENECA	Roman philosopher

SENECA	One of the Five Nations
SENECA	Five Nations people
SENECA	Roman playwright
SENECA	Nero's teacher
SENECA	Stoic philosopher exiled by Claudius
SENECA	Philosopher ordered by Nero to commit suicide
SENECA	Nero's tutor
SENECA	One of New York's Finger Lakes

SENECA	... Falls Convention (first-wave feminism event)
SENECA	Philosopher exiled by Claudius
SENECA	Five Nations tribe
SENECA	Iroquoian language
SENECA	Tribe of the Iroquois Confederacy
SENECA	A Finger Lake
SENECA	Member of the Iroquois Confederacy
SENECA	Central New York county

SENECA	New York Indian people
SENECA	Iroquois cousin
SENECA	New York tribe or lake
SENECA	Indian tribe or Finger Lake
SENECA	Largest and deepest Finger Lake
SENECA	Largest of New York's Finger Lakes
SENECA	Iroquois member
SENECA	Largest Iroquois Confederacy tribe

SENECA	Largest of the Finger Lakes
SENECA	Adviser to Nero
SENECA	Iroquois Confederacy tribe
SENECA	Iroquois tribe
SENECA	Cayuga relative
SENECA	Toronto college
SENECA	East Coast Indian
SENECA	Five Nations member

SENECA	New York lake
SENECA	Tutor of Nero
SENECA	Roman statesman
SENECA	Roman orator
SENECA	Roman statesman and philosopher