The eremitic Rule of St. Albert is the shortest of the rules of consecrated life in existence in the Roman Catholic spiritual tradition. St. Albert Avogadro, a priest of the Canons Regular and Latin Patriarch of Jerusalem, wrote the Rule in the early 13th century. The Rule is directed to Brother B. (held by tradition to be either St. Bertold or St. Brocard, but historical evidence is lacking) and the hermits living in the spirit of Elijah, who dwelt near the spring on Mount Carmel in present-day Israel. Later in the century, in consultation with Dominican theologians Cardinal Hugh of Saint Cher, and William-Bishop of Tortose, Pope Innocent IV revised the Rule slightly to reflect the realities of mendicant and monastic life.