Hugh Chamberlen, styled the elder to avoid confusion with his son, also called Hugh, was born about 1634. According to Wikipedia, he was born in the parish of St Anne's Blackfriars between 1630 and 1634, but no baptism record has been found.

Hugh Chamberlen the younger was born on 16^th March 1663 and baptised 30^th March 1664 at St Christopher le Stock in the City of London. The church which no longer exists was on Threadneedle Street. It was damaged in the Great Fire of London which happened 2 years after Hugh's baptism.