I am searching for descendants of Edward, Otto, Frederick KOSACK. I have found them in Baltimore prior to the Civil War. After the Civil War they were in Washington, DC. I do know Edward was married to Sophia and had 6 children: George, Gustave, Edward,Florant, Martha and Caroline. Frederick was married to Augusta and had the following: Frederick, Jr. (no children, Augusta, Julia, Emma, Freida, Herbert, Natalie (died as a child)and Wanda. I would like to hear from anyone with information on any of these.