This paper reflects upon the impact of the sibling histories of parents, their parenting decisions, and the projections and internalization of their difficult sibling dynamics, potentially creating hazards for the children of affected parents. It builds upon and extends the literature of history's impact on individual development and the literature on the importance of sibling circumstances in each generation to include the sizeable effect of both on the next generation. Ultimately, it seeks to examine the multigenerational impact of sibling experience through the study of three case histories, argues for the careful attention to the sibling narratives of parents and children in history taking and treatment, and gives case examples of transcending the past through carefully tailored treatment approaches.In one of those moments of insight that occurs when individual cases begin to cluster in ways that organize into patterns, it recently occurred to me that there was a recurring theme in many of my patients' histories involving the sad lives of siblings through multiple generations. Out of that recognition, I began to understand more than ever before the dramatic role of sibling histories in the lives of our patients-for the adults we see in their function as parents and for the children of those parents. What follows is an effort to describe, underline, and better illuminate the significance of sibling relations in the life cycle of personal experience by examining three cases in detail. Ultimately, the themes of these cases and others like them argue for increasing attention to sibling stories from generation to generation that extends far beyond the identification of genetic risk factors. Indeed, the stories of these haunted lives clamor for an understanding of how siblings of one generation profoundly leave their mark in ways that form templates of experience beneath adult life choices, including patterns of parenting, potentially leaving an enormous and sorrowful impact on the next generation of children.Selma Fraiberg's classic Ghosts in the Nursery (1975) is a beautiful, sensitive rendering of the terrible consequences of early childhood experience when parenting is so poor as to leave a pattern of active abuse and neglect as the basis for childrearing in the next generation. Happily, it also speaks to the ameliorative possibilities of recalling the past, objectifying it, and ultimately freeing our patients of the tragedy of repetition through a well-timed deployment of new behaviors alongside of reflective, corrective conversations and experiences in the patient-therapist relationship. Fraiberg's work is not about those nurseries that are occupied by the ghosts of siblings who in their