My great grandfather was also William Newbigging and great grandmother Frances Minto Smith.
My grandfather was James Smith Newbigging who married Ellen Edith Fanny Edmonds. His D.O.B was 16/02/1885.
I have found nine Newbigging siblings altogether, in this order of birth: Janet Watson, Marion Ramsay, Willimina Smith, William, Francis Joanna M S, James Smith, John Watson Smith, Thomas Watson & Margaret Smith.
My great great grandfather was William Newbigging, married to Marion Ramsay.
My great, great, great granfather was James Newbigging, married to Helen Graham.