St. Vincent: St. Vincent was Deacon of Saragossa, and a martyr under Diocletian in 304. This most renowned martyr of Spain is represented in the cassock of a deacon, and has as emblems a cross, a raven, a grate, or a fire-pile. He is honored as the patron in Valencia, Saragossa and Portugal. Very little can be confirmed about his life.
By order of Governor Dacian, Vincent and his bishop were dragged in chains to Valencia and kept in prison there for a long time. Then Valerius was banished, but Vincent was subjected to many cruel torments, including the rack, the gridiron, and whipping. After suffering these, he was again imprisoned in a cell strewn with shards of broken pots.
He was then placed in a soft and luxurious bed, to shake his constancy, but there he expired. After peace was restored to the Church, a chapel was built over Vincent’s remains outside the walls of Valencia. Source link
Saint Sebastian (Feast date: Jan 20) was the son of a wealthy Roman family. He was educated in Milan and became an officer of the imperial Roman army, and Captain of the Guard. He was a favorite of Emperor Diocletian. During Diocletian’s persecution of the Christians, Sebastian visited them in prison, bringing both supplies and comfort.
He is reported to have healed the wife of a fellow soldier by making the sign of the cross over her. During his time in the army, he converted many soldiers and a governor. Charged as a Christian in 288 in Rome, Sebastian was tied to a tree, shot with arrows, and left for dead. However, he survived, recovered, and returned to preach to Diocletian, where the emperor then had him beaten to death. Source link