Kate Cunningham, from Sefton, Merseyside, changed her surname to Elder when she and the elder tree tied the knot at Rimrose Valley Country Park, and admits her 15-year-old son is “a little” embarrassedKate Cunningham, from Sefton, Merseyside, changed her surname to Elder when she and the elder tree tied the knot at Rimrose Valley Country Park, and admits her 15-year-old son is “a little” embarrassed