By Mike Stimpson Local Journalism Initiative Reporter 31/05/2024 16:08 THUNDER BAY — A documentary maker with roots in two Treaty 3 First Nations won two Canadian Screen Awards in Toronto on Thursday but had no time for celebration. Ryan McMahon, whose mother is from Couchiching and whose paternal grandmother was from nearby Rainy River First Nations, explained Friday that he instead had family duties. “My partner and I, we have a six-month-old and a 2½-year-old,” the host, co-writer and co-producer of the Crave documentary series Thunder Bay said. “And she has two kids from a previous relationship, and I have two kids from a previous relationship. “So immediately after the awards, we ran back to Union Station and caught the train home to Hamilton because it was her 11-year-old’s…