I am not related to this family, only want to help Jerry.
I know nothing other than was posted (on a couple different genforum sites) by you.Based on what you posted the most probable father was Gerald Edmond Clevenger b. 18 April 1933, male, b. of mmn Moberly...b. in San Luis Obispo County.
Gerald Edmond Cleveger's probable sister was: Marilyn Jean Clevenger.....f. b. 27 March 1935, mmn Moberly.
There was a Stanley Bennett Clevenger on the CA deaths...b. 22 Feb 1924, mmn Bennett, male born California, d. San Luis Obispo county, d. 19 Sept 1985, d. age 61.
So, if these names/dates mean anything to Jerry, please let him know and he can email me at firstname.lastname@example.org if he wants to look further.