Responding to calls to contextualize social psychological variables in history, the present research examines the relationship between collective relative deprivation and collective esteem using a historical perspective. We hypothesized that collective relative deprivation perceived to be experienced during an important low-point in a group's history serves to define the group's current collective identity, which is in turn associated with collective esteem. In Study 1, cultural narrative interviews were conducted with Francophone and Anglophone Quebecers in order to identify key historical chapters for these groups and to examine the extent to which historical low-points were identity-defining features of their narratives. In Study 2, using the information obtained from these narratives, collective relative deprivation was explored across group members' perceived histories and related to current in-group entitativity and collective esteem. The relationship between collective relative deprivation thought to be experienced by one's group during a historical low-point and collective esteem was positive for both Anglophone and Francophone Quebecers and was mediated by in-group entitativity. Collective relative deprivation perceived to be experienced during a historical low-point serves to define one's collective identity, which is in turn associated with greater collective esteem.