Blackwork—also known as black embroidery, Spanish work, or geometric black embroidery—refers to a style of hand‑stitched needlework that uses straight stitches to form lines, patterns, and geometric designs. Historically, these stitches were worked with black silk thread on linen or cambric fabric, and early examples suggest that the technique may have originated as a simple form of seam decoration. Over time, however, blackwork evolved into a highly decorative art, with increasingly complex motifs covering larger areas of clothing. Today, the technique of blackwork has expanded beyond traditional garment embellishment and is used to create modern works of art by mixing patterns to create detailed landscapes, portraits, and animal illustrations.

The origins of blackwork are debated, and embroiderers differ on where the technique first emerged and who introduced it into fashion. Because very few garments from earlier centuries have survived, much of what we know comes from portraits and religious paintings, which provide visual evidence of blackwork’s use and the types of designs that were popular during different periods.

Margaret Pascoe argues in Blackwork Embroidery: Design and Technique, that there is “no firm evidence for the existence of blackwork before 1516” (Pascoe, 1986, p. 9). She also suggests that Hans Holbein—whom Mary Gostelow describes as “supreme among blackwork artists” (Gostelow, 1998, p. 46)—provided some of the earliest visual evidence of the technique in a 1516 sketch for the St. Sebastian Altarpiece.

Another viewpoint comes from embroiderers, Mary Gostelow, Lesley Wilkins, and Elisabeth Geddes and Moyra McNeill, who argue that this form of stitching is referenced in Chaucer’s Canterbury Tales, written between 1388 and 1400. A modern 1951 translation by Nevill Coghill includes the following lines:

“Her smock was white; embroidery repeated

Its pattern on the collar front and back,

Inside and out; it was of silk and black.

And all the ribbons of her milky mutch

Were made to match her collar, even such…..”

(Geddes & McNeill, 1976 p.15) A mutch refers to a woman’s linen or muslin cap.

While the exact origin of blackwork remains a mystery, it begins to appear on clothing depicted in 15th‑century paintings, and it gained significant popularity among the fashion elites of the 16th century. Several authors attribute this rise in popularity to Catherine of Aragon, who served as Queen of England from 1509 to 1533. During her marriage to Henry VIII, who reigned from 1509 to 1547,  blackwork was known in England as “Spanish work,” reflecting both Catherine’s heritage and the cultural influence she brought to the Tudor court.

Spanish work initially appeared as a simple embellishment along the edges of cuffs, necklines, or seams. Some historians suggest that seam decoration may have served a structural purpose by reinforcing the seam, although this remains uncertain. Early edge designs were minimal, typically executed in what is now known as a double running stitch, producing an identical appearance on both sides of the fabric.

By the 1530s, Spanish work had begun to develop into more elaborate patterns and was applied across entire cuffs and collars. These designs were predominantly geometric, forming borders that reflect influences from Greek, Roman, and Moorish architecture and mosaic traditions. As Becky Hogg notes, white linen garments were “decorated with geometric patterns worked in a black double running stitch, which embroidered the reverse of the fabric as neatly as the front” (Hogg, 2011 p. 10). Embroiderers created these patterns by combining vertical, horizontal, and diagonal stitches of varying lengths or by altering the spacing between stitches.