Udla was definitely a female name in Bessarabia in the 19th century.
My husband's Grandmother was from Bessarabia. A document from 1894 verifying her birth says that the name is Udla.
In Yiddish, people called her Hodel. Her marriage license in 1897 in Geneva in 1897 says Udla.
Her marriage announcement in Berlin in 1897 has her name as Adele. She and her husband were students at the University in Berlin. We
have no idea why they got married in Geneva Switzerland. . In the USA she was legally Adele.
Avivah R. Z. Pinski , near Philadelphia, USA