Information about the uprising originated from the temporarily sidelined archbishop, who seems to have used the occasion to remind the pope about Uppsala's earlier contributions to the missionary work in the north. The pope clearly had not known where Tavastia exactly was, and eloquently urged the archbishop to send in a crusade.
Details about the rebellion came from the temporarily removed bishop, who appears to have utilized the situation to bring up Uppsala's earlier contributions to the missionary efforts in the north. The pope was unclear about Tavastia's exact location and persuasively urged the bishop to dispatch a crusade.