Reliquary theca with relic of St. John Gualbert (Giovanni Gualberto), founder of Vallumbrosan Order

Oval glass-fronted brass reliquary theca housing first-class ex ossibus (of the bone) relic of ​Saint Giovanni Gualberto. The relic is affixed to a red silk ground surrounded by silver wire and gilt paperolle ornamentation and identified in Latin on a manuscript cedula label as S. Joan. Gualb. (Saint Giovanni Gualberto). On the back, the theca is secured with a seal of red Spanish wax bearing an imprint of a coat of arms of an unidentified Roman Catholic Bishop.

Saint Giovanni Gualberto (†1073) was an Italian Roman Catholic abbot and the founder of the Vallumbrosan Order. Born into a noble family, Gualberto was a predictably vain individual who sought pleasure in vanities and romantic intrigues. When his older brother Ugo was murdered, Gualberto set out for revenge. He found the murderer in Florence, but as it was Good Friday, granted the killer's plea for mercy. Soon after Gualberto became a member of the Order of Saint Benedict though he left in order to found his own congregation. He condemned nepotism and all simoniacal actions and was known for the pureness and meekness of his faith. Even popes held him in high esteem. Miracles were reported at his tomb after his death. Pope Celestine III canonized Gualberto in 1193. He is a patron saint of Forest workers, Foresters, Park rangers, Parks, and the Vallumbrosan Order.