Ca. 1600 life-size bust-form reliquary of painted wood housing a significant first-class ex ossibus (of the bone) relic of Saint Gelasius of Fossombrone. The relic is affixed inside an oval glass-fronted cavity and identified in Latin on a manuscript cedula label in as S.Gelasi a. 4 Febrarii (Saint Gelasius [venerated on] February 4). The saint's name is also inscribed on the base of the bust. The reliquary most likely originated from the church in Fossombrone, Italy built around 1609 by Francesco Maria II della Rovere, the last Duke of Urbino.
St. Gelasius of Fossombrone was a third-century Christian soldier and martyr from Fossombrone (Forum Sempronii), Italy. During the era of Roman persecutions, he remained steadfast in his faith despite threats. He is venerated alongside fellow martyrs Aquilinus, Geminus, Magnus, and Donatus (or Donata). Gelasius was martyred for refusing to renounce Christianity, likely under imperial edicts against the faith. Little detailed biographical information survives, but his relics are honored as a pre-schism saint. His Feast Day is February 4.