The Right to private and family life is explained in these documents:

Legally Obligating Documents
African (Banjul) Charter on Human and People's Rights (18)
Convention on Elimination of All Forms of Discrimination Against Women (16)
Convention on the Rights of the Child (16)
International Covenant Economic, Social and Cultural Rights (10)
International Covenant on Civil and Political Rights (17)

Standard Setting Documents
Beijing Platform for Action (103, 107(e), 108(m), 267)
Cairo Programme of Action (7.3, 7.12, 7.17-.20)
UN Special Session on HIV/AIDS (UNGASS) Declaration of Commitment (58)
Universal Declaration of Human Rights (12)