Familial

wiktionary

ref

From French familial(“relating to a family; familial”), from Latin familia(“family (in the sense of the slaves working for a household); household”) (from famulus(“servant; slave”), ultimately from Proto-Indo-European *dʰh₁-m-eló-, from *dʰeh₁-(“to do, place, put”)) + French -al(“suffix forming adjectives”) (from Latin -ālis, from Proto-Indo-European *-li-). Doublet of familiar.

etymonline

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familial (adj.)

1888, "pertaining to the family," from French familial, from Latin familia (see family). Meaning "hereditary" is from 1895; from 1903 as "family-like." Earlier familiar also had been used in the sense "of or pertaining to one's family" (late 14c.).