caligulate...Gaius Julius Caesar Germanicus (August 31, 12 – January 24, 41), most commonly known as
Caligula, was the third Roman Emperor and a member of the Julio-Claudian dynasty, ruling from 37 to 41. Caligula represents a turning point in the early history of the Principate. Known for his extreme extravagance, eccentricity, depravity and cruelty, he is remembered as a despot. He was assassinated in 41 by several of his own guards.
Unfortunately, Caligula's reign is the most poorly documented of the Julio-Claudian dynasty. The literary sources for these four years are meager, frequently anecdotal, and universally hostile. As a result, not only are many of the events of the reign unclear, but Caligula himself appears more as a caricature than a real person; a crazed megalomaniac given to capricious cruelty and hare-brained schemes. Caligula is often accused of having incestuous relationships with his sisters, most notably his younger sister Drusilla, but there is no credible evidence to support such claims either.
[St Patrick's father supposedly maintained lighthouse at Boulogne built by Caligula]
Boulogne Tour d'Ordre Light... 
The Tour d'Ordre -- a name believed to be a corruption of the Latin expression "turris ardens" ("fire tower") -- was built in the year 40 A.D. on orders of the Emperor Caligula, one of a number of pharos built at various points of the Roman Empire. It served as an aid to navigation for vessels crossing the English Channel. After the fall of the empire ca. 500 A.D., maritime trade declined and this lighthouse fell into disrepair along with many others. The Tour d'Ordre was restored as an aid to navigation for a brief period during the reign of Charlemagne, ca. 810. The fire at the top of the tower reportedly could be seen at Dover, on the other side of the English Channel. The tower disappeared in 1644 when the cliff on which it stood collapsed.