Introduction: Recent developments in the study of adverse childhood experiences (ACEs) have explored how parents' exposure to neglect, abuse or dysfunctional home environments in their own early years confers risk for their children. The mechanisms by which threats to child wellbeing cascade across generations is a central concern in family support contexts designed to address complex needs which are often compounded by wider social and economic factors such as poverty, housing instability, and isolation. Purpose: Drawing on a decade of partnership with a non-governmental organisation working therapeutically with families in Ireland, the present study presents key findings from a number of studies involving up to 500 parent-child dyads. In particular in aims to describe their adversity experiences and shed light on potential pathways linking parental ACEs to child psychosocial and behavioural outcomes. Method: Parents completed a survey on behalf of themselves and their child capturing a range of socio-demographic and wellbeing information, as well as an ACE measure that tallied exposure to a range of potentially traumatising life situations or events prior to an individual's 18th birthday. Results: Parents' own ACE history was a significant positive predictor of their children's ACE exposure. Parents' own experiences of childhoos adversity predict the presence of psychosocial and behavioural difficulties in their children both directly and indirectly via their negative impact upon maternal mental health and the quality of parent-child interactions. Conclusions: Family support services are uniquely positioned to identify and interrupt intergenerational cycles of adversity by adopting trauma- and relationship-informed approaches. By recognising how parental histories shape family dynamics, practitioners can promote understanding, resilience, and recovery rather than focusing solely on presenting problems. Addressing adversity across generations enables services to deliver more holistic, sustained support that enhances both parental wellbeing and child outcomes.