von der Schulenburg
Altmark
Arms: Wikipedia (de), nach GHdA-Adelslexikon Bd. 128 (2002), gemeinfrei
An earlier connection with the House of Schulenburg; see also the later marriage of Hertha (Counts von der Schulenburg).
One of the oldest German noble families, documented in the Altmark since 1237 (see also the "Counts von der Schulenburg" entry for the second connection, through Hertha von Gerlach).
Sources: Degener Verlag, Deutsches Familienarchiv vol. 160 »von Gerlach – Lebensbilder einer Familie« (in German); Wikipedia articles on the families named; Wikimedia Commons (coat-of-arms images). Given to the best of our knowledge. Jürgen von Gerlach: von Gerlach. Lebensbilder einer Familie in sechs Jahrhunderten (Deutsches Familienarchiv 160), Insingen 2015 (in German). All sources. For corrections or additions, please contact the family administration.