I have been talking to a relative of the Odells, who is very interested in her family history. She says that the family were related to the Mays by marriage - hence the presence of Stanley May and Richard May as travelling companions. There could also be a link to the Conynghams (spellings vary), who were from Donegal; all of these people were apparently travelling on the same ticket. It is believed that most branches of these inter-related families were Protestants, and it is unlikely that they would have adopted the O’dell spelling. I can probably find out much more about their backgrounds.