Hi Sandy. The best source on this *very* complicated family (the Coutns of Toulouse) is http://fmg.ac/Projects/MedLands/TOULOUSE.htm. Be aware that even the experts do not agree on the relationships in this lineage, but Cawley (the author of the cited piece) uses only primary and contemporaneous sources and so I trust his interpretation the best.
According to him as you'll see, Raimond II was the son of Odo(n)/Eudes and Gersinde.
Eudes, Count of Touluose
Raymond II, comte de Toulouse
If in doubt, we curators are following Cawley's FMG Medieval Lands model, since it's the most consistent. You'll find that the numbering sometimes differs between sources, so we use the FMG numbering but sometimes but the alternate numbering in parentheses.
Flemming Allan Funch is the curator who is most knowledgeable about this lineage (Flemming actually lives in Toulouse himself!) but he has been busy with work and not as active on Geni for the past few weeks. Another curator, Private User, also works on the tree in that area in the border region between Spain and France.