Concepción

Concepción is one of those names linked to the Virgin Mary that, in fact, can be rarely male too. As of 2023, there are in Spain 88 men and ~130000 women named Concepción. The average age for the male form is 71.4 and it is mostly found in the provinces of Ciudad Real and Toledo.

Also Galician: http://www.ige.eu/igebdt/esq.jsp?idioma=gl&ruta=onomast/nomes.jsp
https://gl.wikipedia.org/wiki/Lista_de_nomes_femininos_en_galego#I

This name was used by a female on the 1930 Censo México (Mexico Census).