Informed by Spolsky’s language policy model and the notion of audience design, this study addresses the under-researched context of the multi-generational family originating in the old Polish migration to Sweden. Two families were studied with a focus on (i) intra-familial language choice, and (ii) language policies derived from this choice and from individual reflections. Data were collected through an open-ended bilingual form and interviews, and then underwent descriptive, thematic and appraisal analysis. The findings suggest that family language policy is a heterogeneous social phenomenon. At the ideological level, Polish is the language of the family at home. At the level of practice, family members modify the policy in multiple ways. Language management is primarily verbalized as consequent usage of Polish within the family. Also, an agency belief is expressed, meaning that subsequent generations make independent linguistic choices. With respect to the influence of audience design, the families adjust to the language of the participating audience. With a non-participating audience, Swedish is a preferred or accepted choice. This paper concludes that there should be a follow-up study on the families presented here, which would further contribute to the still limited understanding of how family language policies are reshaped by later generations.