Joaquin Phoenix name son after his late brother,River September 28, 2020 Actor,Joaquin Phoenix and Rooney Mara welcome son a month ago and according to reports,he named him River -after his late actor brother. Director Victor Kossakovsky...Please wait...Subscribe to our newsletterWant to be notified when our article is published? Enter your email address and name below to be the first to know. SIGN UP FOR NEWSLETTER NOW Enter your email address:Delivered by FeedBurner