This paper focuses on ways that adult children and children-in-law mediate contact between grandmothers and grandchildren, following marriage breakdown and remarriage in the middle generation. A qualitative analysis of face-to-face contact between 110 grandmother-grandchild pairs was conducted. Findings showed that adult children have a more direct influence on visiting, by arranging or obstructing visits between grandmothers and grandchildren. The influence of first or second children-in-law was found to be more indirect. By preventing an estranged spouse from seeing his or her child, custodial children-in-law could also be preventing a grandmother's access to her grandchild, if she depended on her noncustodial child to bring the grandchild to see her when he or she exercised visiting rights. Children-in-law could also act as intermediaries through their absence as well as through their presence. These findings, as well as ways that grandparents can negotiate relationships with adult children and children-in-law, are discussed. Especially noted is the value of monitoring communication exchanges, maintaining friendly relationships with children-in-law and step-grandchildren, and acting as resources to the family.