As I understand, the basic 'administrative unit' at this period was the Parish.
Parish church was central, and kept records of baptisms, marriages, deaths.
If someone decided not, or procrastinated, there is no record of baptism.
Sometimes, just prior to marriage, a zealous clergyman may demand proof of baptism, resulting in a flurry of 'adult baptisms'.
In the case of Wares, this may have been just a large farm, with a few cottages for the labourers. Then someone started selling beer.
Someone opened a blacksmith shop ....
But it is still within the Parish of Good Easter. Eventually it becomes a recognized location.
Not sure of the definition of 'Hamlet'
Regards CP