Hi Dave,
I have LEHMANN in my ancestor list. No Broese; however, I am missing a lot of info, though. What I DO have is the following:
Wife of a "grand uncle" Helene LEHMANN, born 1899 in Wirchenblatt (Brandenburg?)
Minna Marie LEHMANN, born 9 Jan 1895 in Lengenfeld. Married Johannes Karl Dick (from Netzschkau) - another Grand uncle
Minna's parents I have as Otto and Lina WOLF LEHMANN.