This study examined national data from two women's cohorts to determine the likelihood that Black grandmothers who resided with grandchildren were more likely than other grandmothers were to have daughters who resided with grandchildren. Of 1098 co-resident grandmothers, 390 (36%) were in the younger of the two cohorts, 603 (55%) were in the older, and 105 (9%) were in both, comprising the sub-sample of grandmothergrandchild mother-daughter pairs. A significantly higher proportion of mothers in the grandmother-grandchildm other-daughterp airs were Black (83%) compared to 37% of the mothers among the non-paired ever coresident grandmothers. The study also found, by proxy, that the co-resident grandmother-grandchild mother-daughter pairs had lower socioeconomic standing than non-paired ever co-resident grandmothers.