This could be her baptism, though note that Rochford was a detached part of Herefords and was transferred to the surrounding Worcs in 1822/33:

First name(s) Martha
Last name Powys
Gender Female
Baptism year 1691
Baptism date 31 Jan 1691
Place Rochford
County Worcestershire
Country England
Father's first name(s) Richard
Father's last name Powys
Mother's first name(s) Margarett
Mother's last name -
Record set England Births & Baptisms 1538-1975
________________

No further information found on FindMyPast or FamilySearch