The “Trail of Tears” map under the history tab on the Tonkawa tribe website has them leaving the Brazos Reserve in Texas in 1859 when Texas closed down that reserve and the Tonkawas, Waco’s, Anadarkos, Caddos and Comanches in it.

Interesting to relate, the Penateka Comanches on the reserve were specifically forbidden to join their fellow reserve residents in fighting other Comanches.

https://www.tshaonline.org/handbook/entries/brazos-indian-reservation

1862 nearly half the tribe was wiped out by other Indians in the Tonkawa massacre.

https://en.m.wikipedia.org/wiki/Tonkawa_massacre

Fort Griffin opens in 1867 several Tonkawas moved near the new Fort Griffin in Texas to serve as Army Scouts, hence their participation in the Red River War.

At this point I’ll insert a link to a sort of bizarre kid’s page from the Fort Griffin website about a Tonkawa Scout Johnson celebrating killing bad Comanches.

https://www.texasbeyondhistory.net/kids/forts/1.html

1883 the remaining Tonkawas, 92 people, were relocated to North Central Oklahoma.

"...if the gentlemen of Virginia shall send us a dozen of their sons, we would take great care in their education, instruct them in all we know, and make men of them." Canasatego 1744