I know there are California Jackleys. Everyone came from one of I believe three Jackle in Germany. There is a fair amount about them on the genealogy site. My direct Jackle was Jocob. My Michael name is a family name on my mothers side. My middle name is Dano which was the maiden name of my great grandmother. As to Jocob's brothers and parents, check a posting on the web site by Marilyn Peterson April 10, 2004. It is very informative.