Motherly

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Old English mōdorlic (see mother, -ly1).

wiktionary

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From Middle English moderly, from Old English mōdorlīċ(“motherly, maternal”), from Proto-Germanic *mōdērlīkaz(“motherly, maternal”), equivalent to mother +‎ -ly.

etymonline

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motherly (adj.)

Old English modorlic "pertaining to a mother;" see mother (n.1) + -ly (1). Meaning "befitting a mother, parental, affectionate" is from mid-13c. Similar formation in Dutch moederlijk, Old High German muoterlih, German mütterlich. Related: Motherliness.