Ziegler wrote his doctoral dissertation for Heidelberg University in 1925 Die Bedeutung des geltenden Wahlverfahrens für die politische Struktur Deutschlands (The importance of the current election process for the political structure of Germany).
(The modern nations: an account of political sociology), published by Mohr in Tübingen, 1931, and still held in most major research libraries.
He was born to Alice and Ernst Ziegler, a wealthy Lutheran banker of Jewish descent.
[6] Heinz Ziegler escaped to England with his two brothers Paul and Hans where he was given a false identity and joined the RAF.
He had a son Toby Eady with the English author Mary Wesley, who worked for MI5 during the war.