dubdobdee | wiki-illiam #104: q9

Q9: Journeying on what, between which termini, might one's thoughts turn to:
i: sleepwalking?
ii: elliptical orbits?
iii: the quintessential libertine?
iv: a soldier without a passport?
v: the founding father of the EU?
vi: the royal prisoner of Sönderborg?
vii: Judith and three mute wives?
viii: clothed and naked versions?
ix: the mount of Bellerophon?
x: melting clocks?

the rules as they have evolved:
a: nice full answers and anecdotes if poss
b: say if googled or no; leave time for non-googlers to play
c: obviously look ahead at future questions if you want
d: don't bring in confirming or dissenting answers from other fora until next set is up and running

spoilers iii is possibly casanova, v is possibly jacques monod, ix is pegasus and x is dalí -- is this tube or railway line names across the world? i