Did a little bit of research and found out that the angel Sealtiel supposedly stopped Abraham from sacrificing his son, Isaac, in the bible's Genesis 22:12. Sealtiel is said to be the angel of obedience (ie Abraham agreeing to off his kid) and love. I'm thinking that's where the image comes from. That said, I'm wondering if the image behind Isaac is an alter. I'm now thinking the fleur d' lis may indeed indicate the maker of the sword was French.