I have a lot of information about this family from their immigration to New Amsterdam, through their son Anthony, and finally to my great grandmother Amelia Ann Cozad. I am not sure what you are looking for. There were four sons and so four linages to search. They spread out all wver this nation beginning with New Jersey and then into the Ohio Country, Pennsylvania, Indiana etc. South to the Carolinas, and Texas. This name has been modified more times than you can count, from Cossart to Cossairt, to Kershaw to Cozart to Cazort to Cozad to Cassatt and on and on. Give me your e-mail and a specific request and maybe I can help you get started.