Roland was an 8th-century military commander, serving under Charlemagne, who was killed by the Basques at the Battle of Roncevaux. His name was recorded in Latin as Hruodlandus. His tale was greatly embellished in the 11th-century French epic La Chanson de Roland, in which he is a nephew of Charlemagne killed after being ambushed by the Saracens. The Normans introduced the name to England.
This name has never been overly common in the Christian world, and it is considered typically Jewish. It was however borne by an 11th-century Hungarian king.
The sonnets of William Shakespeare, on the other hand, are typically three Sicilian quatrains, followed by an heroic couplet.
This was a common name in classical Greece, and, due to both the saints who carried it and the favourable meaning, it came into general use in the Christian world, being especially popular among Eastern Christians. It was however rare in Britain before the 19th century. Famous bearers include three tsars of Russia (in the Russian form Fyodor) and American president Theodore Roosevelt (1858-1919).