Wikipedia
Boeselager
Boeselager is the name of a German noble family from Magdeburg, whose line begins with one Squire Boeselager of Stemmern by Magdeburgon first appearing in the documents on April 12, 1363. The first fully documented member is Henning von Boeselager holding a knight's fief in Wolmirsleben from April 12, 1466. By decree of the Royal Prussian throne, members of the Heesen Line entered the ranks of the barons on December 20, 1823; the members of the Eggermühlen branch were thereafter styled "barons" according to customary law.