User blog comment:Clever Khajiit/Sen's Fortress and Anor Londo, are they linked?/@comment-16047389-20140616151008

No.

Sen's Fortress was built by the gods as a proving ground to gain entrance to Anor Londo. It was not built by some general to attack Anor Londo.

The Serpent Men were created by Seath and serve him. Seath was not part of the rebellion. If anything, he was one of the provocations of it.

Iron Golem was only a guardian of Sen's Fortress, not a weapon used against Anor Londo.

Every shred of evidence that can be found in or out of Sen's Fortress infers it to being exactly what it is stated to be.