What on earth is a 'mystic marriage' and why were they such popular subjects in Renaissance painting?

7 artworks
Madonna and Child with Saints and Angels
Image credit: Campion Hall, University of Oxford

Madonna and Child with Saints and Angels 15th C

Sano di Pietro (1405/1406–1481) (circle of)

Tempera on gold ground panel

H 47.5 x W 37 cm

Campion Hall, University of Oxford

The Mystical Marriage of Saint Catherine of Alexandria
Image credit: National Trust Images

The Mystical Marriage of Saint Catherine of Alexandria c.1470

Lazzaro Bastiani (before 1430–1512) (attributed to)

Oil on panel

H 60.5 x W 38 cm

National Trust, Waddesdon Manor

Madonna and Child Enthroned with Saint Catherine
Image credit: National Trust Images

Madonna and Child Enthroned with Saint Catherine c.1500

Raffaellino del Garbo (c.1466–1524) (style of)

Oil on panel

H 50 x W 38.5 cm

National Trust, Wightwick Manor

Saint Catherine of Siena Receiving the Stigmata
Image credit: Rochdale Arts & Heritage Service

Saint Catherine of Siena Receiving the Stigmata

Francesco Vanni (1563–1610) (attributed to)

Oil on canvas

H 176.5 x W 137.2 cm

Rochdale Arts & Heritage Service

Saint Catherine of Alexandria
Image credit: The Henry Barber Trust, The Barber Institute of Fine Arts, University of Birmingham

Saint Catherine of Alexandria probably late 1640s

Bernardo Cavallino (1616–1654/1656)

Oil on canvas

H 71.7 x W 59 cm

The Barber Institute of Fine Arts

The Marriage of Saint Catherine
Image credit: Walker Art Gallery

The Marriage of Saint Catherine 1902

May Louise Greville Cooksey (1878–1943)

Oil on canvas

H 100.3 x W 60.3 cm

Walker Art Gallery

Maria Virgo
Image credit: Russell-Cotes Art Gallery & Museum

Maria Virgo 1915

May Louise Greville Cooksey (1878–1943)

Oil on board

H 39.5 x W 29.5 cm

Russell-Cotes Art Gallery & Museum