FORT YATES, N.D.  — Standing on a bison pelt, Boston Celtics star Kyrie Irving was smudged with sacred grasses, presented with traditional quilts and eagle feathers and given a Lakota name that means “Little Mountain” as he was welcomed Thursday into his mother’s Standing Rock Sioux tribe.

The All-Star guard and his sister, model Asia Irving, visited the tribe’s reservation that straddles the North Dakota-South Dakota border.