Pejay on Family Tree Circles

Her father was George Lovelock born about 1856.

Now my elder brother says that she always mentioned that she had a relative, Jack Lovelock, who was an Olympic Athlete who died on a railway track. Now I have searched for him and find that, as you probably know, he was John (Jack) Lovelock born 1810 and indeed was an olympic athlete and world record holder. , 1500 meteres 1936 olympics.

I would like to find the connection. Have you any information, please?