In the trilogy, The Sirian Revelations, Patricia Cori mentions the Arien as one of the four alien races whose DNA was used to create mankind. The Arien allegedly are a white skinned race from Orion.
(Two other races are mentioned by name: the Alt and the Engan. No name is given for the fourh, yellow-skinned race).
Note that thus far I have not come across any other author who mentions these alien civilisations. This information was channeled.