No tengo la respuesta, pero se me ocurre que puede ser algo cultural ya que decís que es una partida de nacimiento de Pakistán. Tal vez el nombre de la madre no tenga importancia para ellos, y por eso piden solamente lo de Midwife.

Encontré esto sobre Midwifery y no creo que tenga nada que ver con la mamá que vos pensás.
Midwifery

Midwifery is a blanket term used to describe a number of different types of health practitioners, other than physicians, who provide prenatal care to expecting mothers, attend the birth of the infant and provide postpartum care to the mother and infant. Nurse-midwives (U.S.) may also provide gynecological care.

Practitioners of midwifery are known as midwives, a term used in reference to both women and men (the term means "with the woman"). Most are independent practitioners who work with obstetricians when the need arises.They usually deal with normal births only but are trained to recognise and deal with deviation from the norm. If something abnormal is discovered during prenatal care, the client is sent to an obstetrician. Other midwives will deal with abnormal births, including breech birth. In many areas of the world traditional birth attendants fill this role.


Tal vez te ayude.