These are always fun. Siblings in parentheses.
Archer Patrick
Arthur Jack Hereward (Edward Thomas Eugene)
Arthur Robert James
Augustus Stanley Frederick
Barnaby Rupert Zebedee
Bertie Michael Ian
Charles Victor Swinton
Daniel Oliver Kayvan (George Lewis Samuel)
Edward James Wilfred
Felix Jopson Hewitt (William, George, Edward, Rafael)
Gabriel Patrick Julian (Alice, Walter)
George Jonathan Tedd
Hector James Granville
Henry Alexander (Amy)
Henry William Columbus
Hugo James Arthur (Cosima)
Jacobi Michael Christopher (Oliver James Anthony "Ollie")
James Richard Robert
Jasper Simon (Jemima)
Oswald Sykes
William Henry George
Dorothy
Eve
Florence Amelia Mari (Freddie, George, Lily)
Ida Sybil Daisy
Lexi Grace
Pia Patricia Elizabeth
Rhoda "Willow" (Ned William Hunter Osgood)
Arthur Frederick Deverell & Leopold Hedley Lincoln
My favorites are Hector James Granville, Leopold Hedley Lincoln, Ida Sybil Daisy, and Rhoda Willow. What are yours?