About the middle of the 18th century, Logstown was "an
important Indian village a little below the site of the
present city of Pittsburg. Here usually resided Tanacharisson,
a Seneca chief of great note, being head sachem of the mixed
tribes which had migrated to the Ohio and its branches. He was
generally surnamed the half-king, being subordinate to the
Iroquois confederacy."
_W. Irving,
Life of Washington,
volume 1, chapter 5._