"mor" means "myrrh" in Hebrew and "gan" means "garden" in Hebrew, this might also have a pretty alternative to the mermaid/sorceress meaning. The Hebrew meaning: garden of... myrrh? But does that make any sense, or only incense. Technically myrrh is from a plant and it smells good, as gardens also do. I know someone named Dovgan (surname), which in Hebrew means bear-garden. Myrrh-garden goes together even better.