Karen Robbins, John Alder's niece who lives in Australia, spoke to the club's official website on behalf of the Alder family.
"We would like to thank everyone for their thoughts and wishes and incredibly generous gestures, particularly those who have been able to share personal memories of John," she said.
"We are struggling to comprehend what has happened but we are touched and moved by your kind words, acts and the knowledge that so many people saw John for who he was, a kind, courteous man who was much loved as a son, brother, uncle and fan.
"Newcastle United was his life and we are proud of his dedication to the team. Our thoughts are with Liam's family and the families of the other passengers at this terrible time."