Theresia is a feminine given name of Latin origin, derived from the name Theresa, which means 'to harvest' or 'to gather'. It is often associated with the Latin word 'theresius', meaning 'of the earth'. The name Theresia gained popularity in the Middle Ages through Saint Teresa of Ávila, a Spanish mystic and reformer who lived in the 16th century. In some cultures, Theresia is considered a variant of Theresa, while in others it stands alone as its own distinct name. It is often used in countries with significant Catholic populations due to its saintly association but has also been embraced by families seeking unique and meaningful names for their daughters.
Based on the provided statistics, it appears that the name Theresia experienced periods of varying popularity over time. The most popular years for the name were between 1954 and 1959, with a peak of 58 births in 1959. However, there are also several years with fewer than ten births each, including some recent years like 1993, 1998, 2000, and 2002. Overall, the name Theresia has been used for a total of 2016 births over the recorded period.