The only thing that I have been able to find with the Vangreson is on page 124 in the "Oklahoma Territory Weddings" is where a Wheeler Vanieson age 41 married a Flora Farley, age 17 on 30th day of September, 1900. Recorded in the Blaine County Marriage Records, Book 1 page 292

Also on that page there was a John E. Wymer age 21 married Sarah Ellen Maze age 15 on the 15th of April 1900 in the Blaine County Marriage Records, Book 1, page244.