This chapter focuses on possible impact of sexual and gender diversities on modes of family organisation, and basically on the construction of subjectivity in children raised by unconventional couples in terms of sexuality and gender. It discusses to avoid automatic responses congruent with prefixed schemas and instead place them in a line of thinking with opening to necessary debate. The chapter considers that the way the terms are conceptualised may lead to different and even totally opposite conclusions. The heterosexual family in ancient Greece for reproductive purposes coexisted with strong and privileged affinities for homosexual choice. The classical Oedipus complex is a replica of the nuclear family: mother–father–child, and its functions respond to this structure beyond the person exercising them. The chapter also focuses on the impact of sexual and gender diversities on modes of family organisation and, fundamentally, on processes of construction of subjectivity of children raised in these families.