Complex sentence: Richard got banned from the Coudenhove-Kalergi family by his mother, the head of the family, but retracted the ban when he became the "special man" by his pan-European idea.
Split into simpler sentences: Richard got banned from Coudenhove-Kalergi family by his mother, the head of the family. But she released the ban when he became the special man by his pan-European idea.