Theresa is a Greek-origin name, likely meaning "to harvest" or possibly related to the island of Thera, that accumulated 404,471 SSA records and peaked in 1961, making it one of the most substantial mid-century American names. It belongs to a generation of Catholic names that have been waiting patiently for their moment.
The Saint and the Summer
Two Saint Theresas define the name's religious weight: Teresa of Ávila, the 16th-century Spanish mystic and Doctor of the Church, and Thérèse of Lisieux, the 19th-century French Carmelite whose "Little Way" of spiritual childhood made her one of Catholicism's most beloved saints. The Theresa spelling is the English and German form; Teresa is Spanish and Italian; Thérèse is French. Greek-rooted names that traveled through the Catholic saint tradition acquired a specific cultural weight that secular names simply don't carry. That weight is increasingly an asset rather than a liability.
Mother Teresa's Long Shadow
Mother Teresa of Calcutta, canonized as Saint Teresa of Calcutta in 2016, made the name globally recognizable with associations of radical compassion. That's an extraordinary name inheritance. Parents who use Theresa today are connecting to one of the most recognized human beings of the 20th century, whether they intend to or not. Compare Theresa and Dorothy for two mid-century Catholic names at different stages of their vintage revival.
The Counter-Reading: 1961 Peak, Long Road Back
Theresa peaked in 1961: a 65-year dormancy that has put it firmly in grandmother territory. That vintage depth is exactly what names like Dorothy and Hazel leveraged on their way back to fashionable. Theresa hasn't crossed back yet, but the conditions are right. 1960s peak names are entering the prime revival window; Theresa may not be far behind its cohort.