(Quiricus, or Syricus) was bishop of Barcino (Barcelona) in Spain, about 662. He wrote two letters to Ildefonsus of Toledo, in the first of which he thanks him, in language almost blasphemous in the extravagance of its praise, for having sent him his work on the Virginity of the Blessed Virgin Mary. In the second, he entreats him to devote his time to the elucidation of obscure passages of Holy Scripture.