Heinrike Prinzessin zu Sayn-Wittgenstein, referred to as 'Prinzessin' (princess) by other witches due to her long name and highly noble lineage, is of Orussian aristocracy which later emigrated to Karlsland. It is a distinguished clan with influence across various European states, especially some people in her family have very deep connections to the royal family of Baltland. Her ace archetype is Heinrich Prinz zu Sayn-Wittgenstein.

(Source: Strike Witches Wiki)