 The "Crónica de San Juan de la Peña", a rather late source for Peter's reign, states that Peter was 35 years of age when he died, which places his birth in 1068 or 1069.As a child Peter was placed in the line of succession to the County of Urgell by the first testament of his uncle Ermengol IV, after Ermengol's own son and brothers.He was not destined to inherit it.