womp
of RBG's late husband, Martin:
Ginsburg was born in Brooklyn, to Evelyn (née Bayer) and Morris Ginsburg …. Ginsburg finished a year at law school and married Joan Ruth Bader after her graduation from Cornell
https://en.wikipedia.org/wiki/Martin_D._Ginsburg
http://archive.is/uI3Kb
RBG's husband was from BAYER matriarchal line
Bayer marries Bader
Definitely not incest