According to an edit made on 24 November 2008 by User:G.-M. Cupertino he lists Quintillus's geanology as follows: "His parents were Flavius Numerius and Claudia, his brothers were Flavius Crispius, married to Aurelia Pompeiana, and emperor Claudius II. His maternal grandparents were Claudius Apellinus, Governor of Britannia Inferior, and wife Bassina."
This user provided no references or citations for this addition. I can find no source for this information at all, outside of some very suspect genealogical websites (which link Claudius II and Quintillus to "Flavius Numerius, a Greek Prince", and through Claudia, their mother, they were related to the family of Septimus Severus - see http://members.pcug.org.au/~ronwells/570-9.htm). Given that the legitimate sources for his brother Claudius II Gothicus describe him as being from a lowly peasant family from Illyricum, it is unlikely that Quintillus had this elevated ancestry.
Regardless, given that the two articles (Claudius II Gothicus and Quintillus) are contradictory when it comes to their common parentage, I am planning to delete this information and replace it with what we know about Claudius's ancestry, with appropriate citations. Oatley2112 (talk) 03:29, 20 October 2010 (UTC)