it means nothing
Other than the name Dion, no. The Dion from Dion and the Belmonts is Dion DiMucci (Dion is used as a first name, not a last name).
Dion Matthews's birth name is Dion Kwesi Matthews.
Michelle Dion's birth name is Michelle Lynn Dion.
Tiffany Dion's birth name is Tiffany Therese Dion.
Dion Flynn's birth name is Shannon Dion Flynn.
Dion Nash's birth name is Dion Joseph Nash.
Dion Johnstone's birth name is Dion Martin Hypolite.
Dion Ignacio's birth name is Dion Joseph V. Ignacio.
Dion Graus's birth name is Dion Jean Gilbert Graus.
Céline Marie Claudette Dion is her real name to everyone else she is known as Celine Dion
Dion Basco's birth name is Dionysio Basco.