Lord Shri Ram is considered seventh avatar of preserver God Bhagwan Vishnu according to Hinduism.
This web page explain about ancestors as well as descendants of him .
Mother : Kausalya
Father : Dasharatha king of Ayodhya
Wife : Goddess Sita
Children: Love and Khush
Step mothers : Sumitra and Kaikeyi
Step brothers : Laxman , Shatrugna , Bharata
Friends : Lord Hanuman, Shugrive , Vibhisan