Quinity

His subject is a "strange image" among the llth century drawings of the Winchester school, which he calls a quinity. But what is a quinity? Let me explain it in his own words: "It is a Quaternity of God the Father, the Son, St. Mary, and the Holy Ghost; or, if we add the Infant on the lap of the Virgin, we face the seemingly unique representation of what logically must be called a Quinity".

Source: wiktionary

In 1947, for example, in a wonderful study of the "quinity" of Winchester, Kantorowicz interprets an astonishing sketch in a book of offices (officia) copied in Winchester at the beginning of the eleventh century. He invents the term quinity to describe a curious composition showing the Holy Family, in which there appear two identical representations of the divinity side by side.

Source: wiktionary

It is thus of particular interest to find the Trinity and the Incarnation combined in one medallion in the so- called Quinity of Winchester, of 1023-1035 (fol.75v- fig. 119)195. The Virgin and Child, who holds a book, is next to the two similar figures of God the Father and God the Son, who are sitting on a bow and also holding books. The Holy Ghost alights on Mary's crowned head, and all but she have crossed haloes.

Source: wiktionary

Plate 3 shows Mary as part of what has been called a heavenly Quinity; not the traditional trinity of father, son and holy spirit, but a fivesome where the usual three are joined by Mary and her infant

Source: wiktionary