Have their been any athletes who have claimed national collegiate titles at more than one divisional level within the NCAA? I take care to specify "within the NCAA" because rising up from the JUCO ranks or from NAIA happens all the time, so I don't care about the Kennedy Kithukas of the world.
One would think that a case like that of Jessica Pixler (hugely successful DII runner jumps to DI for a fifth year as a grad student) may exist, but Ms. Pixler/Tebo fell short due to injuries.
Has anybody won a national championship in DII or DIII then gone on to take one at the DI level later on?