*Stefan I von Sponheim
born about <1030> Germany
died 1080

father:
*Siegfrid von Sponheim Graf von Levanthal
died 7 February 1065 Bulgaria

mother:
*Richardis von Pusterthal
born about 1010
died after 9 July 1064

siblings:
*Engelbert I Count of Lavanthal
born <1045 Karnten, Austria>
died 1 April 1096

spouse:
unknown

children:
*Stefan II von Sponheim
born about <1050> Germany
died 25 February 1117/18

biographical and/or anecdotal:

notes or source:
LDS
ancestry.com
The parents are listed in the source as von Sponheim and von Pusterthal only,
so some caution is in order here.