The 'Angel of Death' monument, which marks the graves of Charles A. Schieren (Brooklyn’s next to last mayor) and his wife, Mary Louise, is perhaps the eeriest site in Green-Wood’s. It was crafted by Solon Borglum, who also sculpted Mount Rushmore. An archival shot of this monument appears on Page 37 of my Green-Wood Cemetery book.
The Schieren's died of pneumonia within 24 hours of one another. Inscribed on the plaque in front of the monument are the words: In their lives they were lovely and in their death they were not divided.