A grieving widow has taken on the mammoth task of running 12 marathons in 12 months to raise money for a cause close to her heart after the death of her husband. Laura Coleman-Day, a corporate solicitor at Chatterton’s Newark office, is raising money for Anthony Nolan’s potentially live-saving research after the death of her husband of nearly five years, Xander Coleman-Day. Xander was diagnosed with acute lymphoblastic leukaemia in September 2022 and required a stem cell transplant. Anthony Nolan has the largest donor register in the world and found him a suitable match — and Laura wanted to r…