A Genealogy History of The Ryckman Family of Kalkaska County:Information about Jacobus Ryckman
Jacobus Ryckman (b. June 1766, d. date unknown)
Notes for Jacobus Ryckman:
Reference:Reflections of our Ryckman past (history), page 68, by Sharon Marshall.
"He served in the War of 1812 under Colonel Bratt in Ontario."