The “cross rayonnant” may also be called a “cross irradiated”. Its construction is similar to the medieval rose en soleil. It is cited in the Rous Roll, 1483, as the attributed arms of the ancestor of the Earls of Warwick.
David Trueheart bears: Sable, a chevron inverted enhanced and in base a cross couped rayonnant argent, all within a bordure ermine.
Francesca Laura di Firenze bears as a badge: On a cross couped rayonnant argent a fleur-de-lys gules.