ancestral (adj.)
- aboriginal
 - atavistic
 - autochthonous
 - fatherlike
 - fatherly
 - maternal
 - motherlike
 - motherly
 - parent
 - parental
 - paternal
 - patriarchal
 - prehistoric
 - prime
 - primeval
 - primitive
 - primordial
 - pristine
 
The stately homes of England,—
How beautiful they stand,
Amid their tall ancestral trees,
O'er all the pleasant land!
Ancestral voices prophesying war.