Umme

"Umme" comes from the Arabic word "umm," meaning mother. In its fuller form it opens a phrase: "umm" plus a name gives "mother of," a construction Arabic uses to name a woman by her child. The short meaning given here, "mother of," is that grammar turned into a name.

This kind of name has a history you can check. Umm Kulthum was a daughter of the Prophet Muhammad, and centuries later the Egyptian singer Umm Kulthum carried the same form to fame in the twentieth century. The "umm" element sits at the front of both.

The origin here is filed simply as other, with an Arabic cultural tie rather than a Slavic one.

On a Polish class register, "Umme" reads as foreign, and that is the point of it. It usually marks an Arabic-speaking family. No Polish diminutive has grown up around it. The form holds. The name stays as it arrived, three letters after the double m, meaning mother of.