|Notable family members|
Extant (possibly) )
"Sinistra" originates from the Latin "sinister", meaning "left" or "with a direction to the left".  The most probable explanation for this is that the planets of the solar system rotate anti-clockwise. Sinistra is also the name of a star of the constellation of Ophiuchus. The contemporary meaning of the word "sinister" is "having bad intent" , but considering the family's limited involvement in the plot, this likely has no meaning to the story.