I did locate an Oyler family tree, which is my ancestors on my Grandma's side. Here's the link:
3 Emanuel Oyler b. 24 Aug 1847 Darke Co., OH d. 18 May 1916 Bunker Hill, IN m. Lamanda J. Stump m. 03 Apr 1874 b. 27 Oct 1857 Huntington Co., IN d. 12 Jun 1938 Bunker Hill, IN 4 Lillie Mae Oyler b. 17 Jul 1882 Cass Co., IN d. 22 Jun 1955 Bunker Hill, IN m. William F. Betzner m. 27 Aug 1903 b. 06 Jan 1882 Bunker Hill, Miami Co., IN d. 10 Sep 1948 Bunker Hill, Miami Co., IN 5 Walter Betzner (details excluded) m. Grace Hunter 5 Arthur Otis "Bo" Betzner (details excluded) m. Patricia Peters 5 Mary Lamonda Betzner (details excluded) m. Alvin Roscoe Wood b. 25 Oct 1906 d. 18 Aug 1973 6 Donald Dean Wood (details excluded) m. Female Hawkinson m. Roma Wood d. 1958 m. Elsie Wood m. Lois Wood 6 Dale Alvin Wood b. 27 Dec 1937 Miami Co., IN d. c1985 m. Doris Richardson 7 Dennis Wood 7 Dianne Wood 7 David Wood 7 Diedra Wood 6 Mary Kay Wood (details excluded) m. Carl Ray Heltsley 7 Keith Eric Heltsley m. Robin LeRay Morris 21 November 1981 8. Christopher Eric Heltsley 8. Michael Keith Heltsley 8. David Isaac Heltsley 9. Odie Victoria Marie Heltsley 8. Nathan Daniel Heltsley 7 Terry Lynn Heltsley m. Patsy Heltsley m. Elizabeth Hill m. Carol Joyce Heltsley 8. Andrew Heltsley (by Patsy) 7 Jill Darlene Heltsley m. George Kelley 8. Lamanda Darlene Heltsley 8. Ashley Kelley 8. Megan Kelley 8. George "Bub" Heltsley 7 Steven Dean Heltsley m. Katherine Krebs m. Diana North 8. Steven Dean Heltsley II 6 Joseph Curtis Wood 7 Joseph Curtis Wood Jr. 5 Cecil Richard "Jake" Betzner (details excluded)
There are still a lot of Wood and Betzners in Indiana around Miami County, I just don't know them all very well. I know there have been some family geneologies done along the Betzner line, but apparently none that have been posted online.
For those interested, the Betzners of Indiana have a long standing date for a family reunion. The first Sunday after the Fourth of July. It is rarely cancelled. I don't have the contact info. I usually get the details from my mom.