This John Oram might be the one baptised at Gnosall, Staffordshire in 1640. However, the only marriage of a John Oram to Joane that I can find for the period concerned was a marriage at North Cadbury in Somerset to Joane Feilde in 1662. Joane Feilde was baptised at North Cadbury in 1638. There were many Oram families in Somerset at that time so this marriage is unlikely to involve the John from Gnosall.

I think it more likely that there is another marriage of John Oram to Joane which has not been indexed on any of the genealogy websites.

Joane was buried the day after her daughter, Mary, was baptised so her death was very likely the result of childbirth.