Dierkens, Petrus a Flemish theologian, was born at Ghent; entered the Dominican order in 1620, and taught both philosophy and theology at Louvain. He was, in succession, doctor of theology, school director, and vicar provincial of Lower Germany, and died August 3, 1675, leaving, Exercitia Spiritualia (Ghent, 1659): — De Vita Contemplativa, etc. (ibid. 1663): — De Obligationibus Regula et Constitutionrum (ibid. 1667). See Hoefer, Nouv. Biog. Generale, s.v.