Infant Sleep in a Family Context -- Sleep and Development: Familial and Socio-cultural Considerations -- Relationship Quality: Implications for Sleep Quality and Sleep Disorders -- Couple Dynamics and Sleep Quality in International Perspective -- Sleep, Marriage and Social Engagement among Older Adults -- Family Influences on Sleep: Comparative and Historical-Evolutionary Perspectives -- Sociodemographic, Psychosocial, and Contextual Factors in Children's Sleep -- How Can Family Scholars Advance Understanding of Sleep and Health? -- Studying Sleep in Family Contexts Via Actigraphy and Wearable Devices -- Dynamic Interplay Between Sleep and Family Life: Review and Directions for Future Research