Cognation /(?)/

Cog·na·tion

Cognation

n.
  1. Relationship by blood; descent from the same original; kindred.
    As by our cognation to the body of the first Adam.
  2. Participation of the same nature.
    A like temper and cognation.
    — Sir K. Digby.
  3. That tie of consanguinity which exists between persons descended from the same mother; -- used in distinction from agnation. (Law)