Oscar winner Joaquin Phoenix has reportedly welcomed a son with fiancee Rooney Mara; the pair naming him River in honour of his late brother. Joaquin and Rooney are both very private about their personal lives and their relationship, with a source revealing the pregnancy news to   Us Weekly back in May of this year, saying, “Rooney is about six months along,” the source said. “Joaquin is great and has been accompanying her to appointments.” Photo Gigi Iorio