Johann Karl X Wilhelm
von und zu Massenbach, known as Karl. 12th Baron Massenbach in the H.R. Empire, etc. (succ.1893 his father Baron name="Georg XI."), , Co-Lord of Massenbach, of Piine & Jakowbowo, etc. He was co-succ. by his 2 sons. Memb. of Parliamt 1907-18, Roy. Pruss. Order of St John.