Which preposition to use with filial

in Occurrences 2%

Young Romilly is divine, the reasons of his mother's grief being remediless,I never saw parental love carried up so high, towering above the other loves,Shakspeare had done something for the filial in Cordelia, and, by implication, for the fatherly too in Lear's resentment; he left it for you to explore the depths of the maternal heart.

en Occurrences 1%

y fogosidad de su carácter y de sus verdes años; y el príncipe que había asombrado al mundo con los rasgos de su deslealtad filial en Aranjuez, de su humillación y bajeza en Valencey, y de su versatilidad, falsedad y crueldad en el trono, al recobrar el poder

Which preposition to use with  filial