Markgraf

From this time, P. began to decline; various districts were ceded to the markgrafs of Brandenburg, while many districts began to be colonised by Germans.

Source: wiktionary

[…] he was large-boned, lean, but still firm-knit, tall, and strong-looking when he stood, a right good old steel-gray figure, with rustic simplicity and dignity about him, and a vivacious strength looking through him which might have suited one of those old steel-gray markgrafs whom Henry the Fowler set up to ward the “marches,” and do battle with the intrusive heathen in a stalwart and judicious manner.

Source: wiktionary

The future of eastern Europe was in the hands of the markgrafs of Brandenburg and of Austria.

Source: wiktionary

But in 1154 the advent of the Kaiser Frederic Barbarossa in Italy so strengthened the markgrafs around Vintimilia that in 1158 the Genoese were expelled from their fortress.

Source: wiktionary