Given a text, write a compressed version of it in a single sentence.

Their primary religious ceremonies commemorated the passion and death of Jesus Christ, during the celebrations of Semana Santa, "Holy Week." It is speculated that the starting date of the brotherhood is somewhere between 1790 and 1810.
Their religious ceremonies commemorated the passion and death of Christ, during the celebrations of "Holy Week." It is speculated that brotherhood is  between 1790 and 1810.