"a desire to bind as close as possible the ties of domestic love, determined my mother to consider Elizabeth as my future wife; a design which she never found reason to repent"

   Frankenstein's arranged marriage to his first-cousin Elizabeth Lavenza would not have raised as many eyebrows in 18th-century Switzerland as it does among today's readers, such matches having a long history within noble bloodlines.  Their possible degenerative result only became a serious topic of concern towards the end of the 19th century, and remains hotly contested in some quarters.  However, the fact that the two are also raised as siblings from a young age makes their relationship socially as well as genetically incestuous.  Even in the 1831 edition, in which Shelley severs the lovers' blood ties, the domestic introversion of Victor's relationship with Elizabeth suggests the misguided, self-destructive egotism which defines his character.