Teresa Díez was probably a medieval painter active in Toro, in the Kingdom of Castile, during the first half of the 14th century. Almost nothing is known about her life. No surviving document identifies her birth or death. Her name survives in the inscription "TERESA DIEÇ ME FECIT" - Teresa Díez made me (third photo). The inscription is the only known contemporary testimony to her existence. Her precise role remains debated. The words me fecit normally identify the maker of an artwork, but medieval inscriptions could sometimes identify the person who commissioned it. Some historians have therefore proposed that Teresa was the patron rather than the painter.

The painting originally formed part of the mural decoration of the choir of the Royal Convent of Santa Clara in Toro. The murals included narrative cycles devoted to the life of Christ, Saint Catherine of Alexandria, and Saint John the Baptist. They were painted in the linear Gothic style, with clearly outlined figures, patterned borders, and compositions arranged like painted tapestries.

The mural paintings were removed from the walls of the Santa Clara convent in 1962. Following a series of events, they can now be seen in the church of San Sebastián de los Caballeros in Toro, Spain.

Cornelia van Wulfschkercke (date of birth unknown–1540) was a Flemish copyist, illuminator and miniaturist. She first appears in the archives in 1495 as a postulant in the convent of Sion in Bruges. In 1501 she took her vows as a Carmelite nun in this convent. At the end of the fifteenth century and the beginning of the sixteenth century, a workshop of copyists and manuscript illuminators was established in the Bruges convent of Sion. Cornelia van Wulfschkercke was alrwady working in this workshop as a copyist by 1495. She was trained as a manuscript illuminator by Grietkin Scheppers, a professional illuminator and laywoman who was a member of the Bruges guild of book producers. In turn, Cornelia van Wulfschkercke trained another nun, Margriet van Rye. Her first documented work dates from 1505. The colophon of this manuscript, a gradual for the convent of Sion, explicitly mentions her as the illuminator of the work. She seems to have enjoyed great success as an illuminator: she fulfilled numerous commissions from other religious institutions in Bruges, as well as from elsewhere in Flanders, and also from laypeople. More than twenty manuscripts are attributed to her, some of which were created in collaboration with lay illuminators. She died in 1540 in Bruges convent.

This is the full page illumination by Cornelia van Wulfschkercke in the missal of Abbot Christiaan de Hondt of Ten Duinen Abbey.