Zara Madeline Daphne Joy is great, but an overload of names - gives the impression that all names on shortlist were used!
Vivian is traditionally the British boys' spelling.
Vivienne Rose is pretty but I tend towards
Vivien - good to see this lovely name being used.
Zara Frances is pretty and
Xanthe relieves the over-use of
Isabelle.
Xanthe's siblings have nice names.