We have Rudolf II von Tübingen married to Unknown von Ronsberg. While this is in the literature, there is no record of the name of his wife (see for ease of access FMG Rudolf von Tübingen). Heinrich von Ronsberg is documented to have had 3 sons and 2 daughters, the marriages of both are documented and they were not married to Rudolf. I'm proposing to disconnect Unknown von Ronsberg and leave Rudolf's wife unknown and change Unknown von Ronsberg to Irmingard, married to Egno von Eppan aka von Ulten.
Also supported by Ludwig Schmid's Geschichte der Pfalzgrafen von Tübingen (1853), p. 144, which appears to be a thorough study based on all available primary sources (in fact, much of the verbiage in Rudolph's profile is a direct translation from passages in Schmid, probably derived via Wikipedia). Schmid, on pp. 144-146, also discusses this Rudolph's three sons and one known daughter.