On the side of Archbishop Gänswein's chivalric coat of arms is the serpent(dragon) that symbolises the Devil being slain by his patron, Saint George .The seven-point star represents the Blessed Virgin Mary. Gänswein took "Testimonium Perhibere Veritati" ("To bear witness to the truth") as his episcopal motto.
The videos also give some good details and wonderful photos of his excellency and His Holiness Benedict the XVI. i do have some of the bishop with Blessed John Paul II somewhere. Will see if i can locate.
His Prayer for the Conclave