sentences:  It is assumed, that he was installed as the bishop during the so-called Second Swedish Crusade around 1249 and was not only religious, but also the secular leader of the conquered Finland.He succeeded in office Bishop Thomas, who had resigned three years earlier.Bero seems to have been the same "Bishop B. of Finland" ("B episcopus de Finlandia") who is listed among other Swedish bishops in a document from 1253, the first so appearing.