The two midwives mentioned in Exodus 1:15 were probably the superintendents of the whole class.
These dictionary topics are from
M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition,
published by Thomas Nelson, 1897. Public Domain, copy freely.
Bibliography InformationEaston, Matthew George. "Entry for Midwife". "Easton's Bible Dictionary". .