Families of Dutch ancestry from Kings County, Long Island first began settling in Monmouth County, New Jersey in the 1690s. By 1709 they were in significant enough number to require the services of their own minister. The Reformed Congregation of Freehold and Middletown was established in 1709. The first minister was Joseph Morgan, who was born in 1671 at Preston, New London Co., Connecticut, the son of Lt. Joseph Morgan and Dorothy Parke. He was enrolled with the Yale College graduating class of 1702, and served as minister at the Second Church of Greenwich, Connecticut and preached at Bedford in Westchester County, New York before coming to Monmouth County, New Jersey. In 1696 he was married to Sara Emmons, daughter of John Emmons (Emons/ Emans) and Sara Anthonise Janse (van Salee), a daughter of Anthony Jans van Salee and Grietje Reijners, early at New Amsterdam and the earliest settlers of Gravesend, Long Island.
The records of the Reformed Dutch Congregations of Freehold and Middletown were published in the Genealogical Magazine of New Jersey (GMNJ) beginning in 1947 with volume 22. They were continued through volume 38. Volume 22 provides a brief introduction, gives a list of the first church officers and members, and includes the baptisms recorded from 20 October 1709 to 21 April 1723. The records are not as complete as, for example, the records of the New York Reformed Church for the same time period. Some may find them a bit frustrating as there are many records in which the mother is not recorded or the child's name and sometimes gender, are not given. Many of the records do not list the witnesses/sponsors. However, they are all we've got, and when using them along with the New Jersey Probate records and Land Records, we can accurately reconstruct many of the colonial Dutch families of Monmouth County, New Jersey.
I have scanned my photocopies of the pages from the GMNJ and will place them online beginning with volume 22 below. It is suggested that you download the PDF for your own use.
Records of the Dutch Congregation of Freehold-Middletown, GMNJ v. 22 (1947)
For a bit more, and source citations for Rev. Joseph Morgan, please find his profile at the database, Descendants of Alice Freeman Thompson Parke by using one of the indexes.