The baptism you mention as transcribed.
Hester Atkersmith (Baptism) 22 Jul 1689 St Bride's, Fleet Street, City of London, John & Mary
I have looked at the parish records on Ancestry and the surname is proving difficult, I cannot see a marriage or any other baptisms. I have skimmed through the 2400 + John & Mary marriages to no avail.
The record for Hester is clear and the spelling as your post. The St Brides records are in good condition but I do not see any marriages, maybe those records are missing?
Sorry I cannot help.
Colin