Zennor was designed by Phill Grimshaw in 1995. Grimshaw studied at Bolton College of Art before earning a place at the London Royal College of Art in the early 1970s. He subsequently specialised in type design, returning to Lancashire where he established a commercial lettering studio. Grimshaw was prolific: he created dozens of dynamic, calligraphic-inspired typefaces, including Arriba, Braganza, Kendo, Scriptease, Tempus Sans, Pristina and Grimshaw Hand. In turn, his calligraphic work was inspired by typography, and his experimental crossover technique earned him a formidable reputation. His 1992 typeface, Hazel, became the last type design to be produced by Letraset as a dry transfer.