Noun
descendance (uncountable)
The property of being a descendant; descent.
Fans of the show may remember one particularly awkward moment during last year's series which saw Hayley and her mother Debye – known together as Descendance – part ways during a Boot Camp audition. Source: Internet
He was a Claudius by descendance, although he had Julii Caesares among his ancestors, both from his mother's as his father's side. Source: Internet
One of the most basic is the use of blood as a symbol for family relationships through birth/parentage; to be "related by blood" is to be related by ancestry or descendance, rather than marriage. Source: Internet