Meaning and Name Origin
Ottilia \o-tti-lia\ as a name for girls means "prosperity in battle". Ottilia is a variant of Otthild (Old German): from "od hild". Ottilia is also a variation of Ottilie (French): variant of Otthild.
Ottilia is an uncommon first name for females. Ottilia is also a rare last name for both adults and children. (2000 U.S. Census)
Shown below is the baby name popularity of Ottilia for girls. Ottilia reached its top rank of #783 in the U.S. then, but is not listed at the moment. (2014 Birth Statistics)
Below is a graphed comparison of the usage of the girl name Ottilia and related names. Ottilie is the only other popular alternative form of Ottilia listed in the Top 1000. These girl names were at the apex of their popularity during 1880-1889 and are now significantly less popular, with the forms Ottilie and Ottilia becoming less trendy. (2014 Birth Statistics)