Does anyone know the etymology of, rosary?

I read recently that the first rosaries were made with beads of rolled up rose petals and thus, the name. Another explanation is that the rose is symbolic of Mary and since Hail Marys are common in the traditional prayer, the name choice was automatic.

Incidentally, the word bead itself came from a rosary! Old English gebed prayer, of Germanic origin; related to Dutch bede and German Gebet

An AWAD search brought this up and the gaud-gaudy etymology!
http://wordsmith.org/board/showflat.pl?Cat=&Board=words&Number=874