She was the principal wife and aunt of King Itzamnaaj Bahlam III, who ruled the prominent kingdom of Yaxchilan from 681 to 742.

Lady Xoc appears in the images performing ritual sacrifices, which women, unless they were royal, were not typically seen doing in ancient Maya art.

Lady Xoc and her lintels have been of great value in reconstructing the historical role of royal women in Maya rituals and politics.

Given that he was such a prominent and popular king, it is interesting to see that his principal wife, Lady Xoc, was one of the few women depicted in ancient Maya carvings.

Furthermore, Tate reports that "through the selection of astronomically significant dates, [the location of Structure 23] implies that the movement of the planets and sun are synchronized with the activities of the Yaxchilan kings and Lady Xoc".

Also, Inomata and Houston report that many of the inscriptions on the lintels refer to it as Lady Xoc's "oto꞉t" which translates from Maya to "her space".

By giving Lady Xoc a space of her own, Shield Jaguar put his principal wife in a place of great prominence and power in Yaxchilan.

Putting up the lintels was a way for Shield Jaguar to pay respect to Lady Xoc, whose lineage made him king.

In these lintels Lady Xoc is seen performing a bloodletting ritual in the presence of Shield Jaguar, communicating with a dead ancestor, and preparing the King for battle.

In Lintel 24 Lady Xoc performs a blood sacrifice (or bloodletting ritual) by threading a thorned-rope through a hole in her tongue.

In this lintel Lady Xoc is also wearing a headdress that Tate (1992) reports as occasionally being worn by kings on other sites at Yaxchilan.

These ceremonies involved modifications of the southwest doorways of the building as well as dedications of the carvings in Structure 23 (Inomata and Houston, 2001).

From lintel 23 which shows Lady Xoc's genealogy and the ceremonies involving her home to the famous lintels (24, 25, and 26) which depict her taking a part of ritual and political aspects of Yaxchilan life, Lady Xoc's monuments depict her power and importance in Yaxchilan society.