I have a Martin Ryerson (1600's). And a grandson to him as Martin (abt 1760). The first Martin Ryerson came over before 1663. He was married here in 1663 to Annetje Joris Rapelje. Both Martin and Annetje were from Amsterdam. And a note I have is the he is originally French Huguenot, but left before the reformation. It also says that Ryerson might be Norwegin before that.
The second Martin Ryerson was born abt 1760. And lived in Wanaque, Bergen Co., New Jersey. I don't have any more info on him. His sister Ann married a Luke. Their daughter Jane married James Decker.
If any of this sounds familiar, please contact me at firstname.lastname@example.org
I have a bit more information on both the first Martin, and some of the Deckers.