Native American Reservation Trivia

Following up on the last trivia question about a school (and later an African American church) on park land, the house at right is part of a park that is on land that was once a Native American reservation. As I understand the story, in the very early eighteenth century some Native American people were moved to a 500 acre reservation. (This park has about 180 acres of that reservation.)  And by the middle of the 1730s they had moved further west.  Obviously this house was built after this was no longer a reservation. One report I saw claims this was the first Native American reservation, though I find that hard to believe because I thought that Virginia was by the late seventeenth century already locating Natives on property that was held in trust for them. And the trustees were prominent white men in the Virginia community. But at any rate, this was one of the first reservations if not the first.  It is an incredibly beautiful setting.  I'd love to know more about the history of the relocation of Native people here and their experience once they got here. 

So the question is, where is this and what's the name of the reservation.  Now that Owen has identified this, I want to post a picture of a monument to this reservation. The monument was put up in 1924.