Today's Word "ephemeron"

consanguineous \kon-san(g)-GWIN-ee-us\ (adjective) - Of the same blood; related by birth; descended from the same parent or ancestor.

"...Descent in the royal house to which she belongs had always been confused by substitutions and adoptions; the effects of consanguineous marriage having been fortunately mitigated by impotence on the part of the Kings and gallantry on the part of the Queens, and by the fact that the beauty of Egyptian women far surpassed that of the descendents of the Macedonian mountain brigands." -- Thornton Wilder, 'The Ides of March'

Consanguineous is from Latin consanguineus, from com-, con-, "with, together" + sanguineus, from sanguis, sanguin-, "blood." The noun form is consanguinity, "relationship by blood, or close relation or connection."