Tekla Juniewicz (1906-2022) was a Polish woman who holds the record for longest-lived person from Poland. At the time of her death she was the second-oldest person in the world.
Tekla Bądarzewska-Baranowska (1829/1834 – 29 September 1861) was a Polish composer, mostly known for “The Maiden’s Prayer” published in Warsaw in 1856.
Tekla is also Croatian, Estonian, and Latvian. The name days for Tekla in Croatia are September 23 and October 15. The name day for Tekla in Estonia is September 23. The name day for Tekla in Latvia is January 31. [noted -ed]
This was a popular name in Poland at the turn of the 19th century.
― Anonymous User 3/1/2019
2
Although pretty rare, it is also used in Poland. It always struck me as an old lady name but just recently I've met a little girl named Tekla and I must say, it is rather sweet on a small child.