Ivo Shandor's Mother was shown in a picture on the wall near the Slime Laboratories on Shandor Island. As noted by Egon Spengler to Peter Venkman she looks pretty much the same as Ilyssa Selwyn and suggests a lineage to Ivo Shandor. Egon also notes the portrait was painted in 1885.  Nothing else about Ivo Shandor's mother was revealed.
When the Ghostbusters entered Shandor's castle, they discovered a painting of Ivo Shandor's mother done in 1885. She looked exactly like Ilyssa Selwyn. The Ghostbusters realized Ilyssa was a descendent of Ivo Shandor. Egon concluded Ilyssa must have inadvertently triggered the Mandala because she had Shandor blood.
- The portrait of Shandor's Mother is based on one of Madame de Pompadour, painted by François Boucher circa 1750
- This depiction of Ilyssa descendant is similar to a scene in the movie "The Ghost Breakers" depicting Mary Carter's decedent.
- To the left of Shandor's Mother appears to be a rendition of the Temple of Gozer.
- On page eight of Ghostbusters Volume 2 Issue #20, the Stylized portrait of Shandor's Mother makes a non-canon cameo on the wall above the Containment Unit.