Jean
Could well be as even in the twentieth century those born in the North would sometimes pick out those from the South of the Island by how they sounded.
The pitch, age and S x would also make a difference.
My Brother in law would say he came from Andrus and would call his little sister Miss Kerlit.
John Dog Collister (Callister) got a group together earlier this century to study this and similar things like local sayings.
Peter