Re: Johannis & Laurens Ackerman
Descendants of Johannes & Laurence Ackerman are listed pp. 96, 97 and following in "The Ackerman Family" by Barbara W. Tobey, Vol. I, 1980, published by "David Ackerman Descendants - 1662."That's the Ackerman family association, known as DAD.
If the book is not available, I suggest you contact the DAD website.