The aim of the research programme “Reproduction of inequality through linked lives” (RELINK) is to investigate how social, economic, and health inequalities in one generation re-emerge in the next generation, and the role that siblings and friends may play in these processes. This seminar will focus on some of our most recent empirical findings based on the Stockholm Birth Cohort of individuals born in 1953. For example, how similar are childhood friends in terms of their criminal trajectories? Do children who grow up without siblings or friends have increased risks of premature death? Does having an advantaged position in the sibship or peer group decrease the intergenerational transmission of poverty?