1. Introduction  
2. SCUBA-2 Observations  
2.1. Observations and Data Reduction  
2.2. Background Subtraction and Matched-Filtering  
2.3. Source Extraction  
2.4. Flux De-Boosting, Completeness, Fidelity, and Positional Uncertainty  
3. Ancillary Data  
3.1. MUSTANG-2 Data  
3.2. ASTE AzTEC Data  
3.3. Herschel SPIRE Data  
3.4. SMA Data  
4. Analysis  
4.1. Number Counts  
4.2. Over Density Analysis  
4.3. Photoz Support for an Anisotropic Distribution of SMGs in 4C 23.56  
5. Discussion  
5.1. Spatial Distribution of SMGs in AGN Environments  
5.2. Origin of the Bright SMG Over Density  
6. Conclusions