The GIF source of this imageAlleged cross of Military Order of Mountjoy (Montjoie, Monte Gaudio)-the emblem of Spanish knightly order.
This image is based upon, and is a vector replacement for Image:Cross of order of mountjoy.gif by Janmad.
Completely unsubstantiated. According to William Berry, Encyclopædia Heraldica: Or, Complete Dictionary of Heraldry (1828):

"According to some writers, the badge was a red cross, like that of the Knights Templars; others, that it was  a red star of five points placed on a white mantle; but Palliott is positive that it was a white cross of five rays, and that their mantle was red."
So, according to various, and as of 1828 unidentifiable authorities, perhaps a red cross, perhaps a red star, but Pierre Palliott in 1655 claims "a white cross of five rays" (it is unclear what a "cross of five rays" is supposed to be).
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