You can find the translated lyrics here
Paragraph n°1:
"The darkness of the history had sunk into oblivion the requiem of the nobles
This is their tragic honor who sing the thesis of their love"
Kamijo is talking about the Louis XVI and Marie Antoinette, their honor disgraced, is about the french revolution.
Paragraph n°2:
"The pursue of the progeny of the Fleur de Lys continous, with the sames manners
Since a long time, always by involving to it low-ranked blood"
The progeny of Fleur de Lys is about the Holy Grail's stories, one of them which get Marie de Magdala as the wife of Jesus Christ, so the progeny of Fleur de Lys can mean the descendant of the Rose or the Descendant of Jesus.
So the pursue of the progeny of the Fleur de Lys, can refer to the Vatican.
By involving to it low-ranked blood, can mean by mixing to it non-noble blood.
Paragraph n°3:
"Abandoned rosary, in the name of the uncrowned king
For you, I dedicate my body, I'll sacrifice myself for your sake..."The uncrowned King in the Symphony of the Vampire can refer to the young Louis XVII, but can also refer to Jesus Christ in the album Heart, because Jesus is a descendant of the King Salomon after all.
Paragraph n°4:
"Does he survived? Or he got resuscitated?
Or he just got an immortal body?
Nobody knows more, about the Presto of shadows and blood..."He goes to Louis XVII about the debate of "Was he killed in the temple?" but also in this paragraph the he can refer to Jesus Christ, so we have part of people asking if Jesus survived the crucifixion with the "Rolling Stone" 's fact, and part of people are asking if this is a resurrection, and also we have part of people saying that Jesus's body is immortal, yeah a kind of Jesus is a Vampire, we can feel this in the song VAMPIRE of Verailles.
Paragraph n°5:
"We saw in a dream, that the future which's awaiting this boy
Wasn't just sadness
Because, soon he will be set as a great king"After all, the young Louis XVII is called King in our time.