childwife
/ˈtʃʌɪldwʌɪf/noun
1A midwife. rare (now historical ).
2A woman in labour, or who has recently given birth. Now rare ( literary and historical ).
3Chiefly in form child-wife. A wife who is still a child; a very young wife.
Origin
Late Middle English; earliest use found in John Trevisa (c1342–?1402), translator. From child + wife.