When civilian government was introduced to the province by the Americans on 16 March 1901, Azagra was one of 11 new municipalities created.
However, by the end of the year, the seat of the municipality was transferred from Azagra to San Fernando village, thereby, changing the town's name.

On 8 June 1940, the passage of Commonwealth Act No.
581, sponsored by Congressman Leonardo Festin, created the special municipality of Sibuyan.
It abolished San Fernando and was annexed to the new town whose seat of government was in Cajidiocan.
The special municipality of Sibuyan was abolished by Republic Act No.
38, authored by Congressman Modesto Formilleza and enacted on 1 October 1946.
It effectively restored San Fernando into its former status as an independent municipality.

In 1958, San Fernando High School, the town's highest institution of learning was converted into a national school for arts and trades known as Romblon National Vocation School under Republic Act No.
2428.

On 21 June 2008, MV Princess of the Stars, the flagship inter-island ferry of Sulpicio Lines sank in the waters of San Fernando after during the onslaught of Typhoon Fengshen (locally known as Typhoon Frank).
Of the ship's 862 passengers and crew, only 48 survived while 67 were confirmed dead and 747 remain missing.
A massive search-and-rescue, and then recovery and salvage operation, took place in the waters of San Fernando to remove remaining dead bodies and potentially dangerous cargo from the sunken ship.
The wreck of the MV Princess of the Star still remains in the town's coastal waters.
When civilian government was introduced to the province by the Americans on 16 March 1901, Azagra was one of 11 new municipalities created. However, by the end of the year, the seat of the municipality was transferred from Azagra to San Fernando village, thereby, changing the town's name.
On 8 June 1940, the passage of Commonwealth Act No. 581, sponsored by Congressman Leonardo Festin, created the special municipality of Sibuyan. It abolished San Fernando and was annexed to the new town whose seat of government was in Cajidiocan. The special municipality of Sibuyan was abolished by Republic Act No. 38, authored by Congressman Modesto Formilleza and enacted on 1 October 1946. It effectively restored San Fernando into its former status as an independent municipality.
In 1958, San Fernando High School, the town's highest institution of learning was converted into a national school for arts and trades known as Romblon National Vocation School under Republic Act No. 2428.
On 21 June 2008, MV Princess of the Stars, the flagship inter-island ferry of Sulpicio Lines sank in the waters of San Fernando after during the onslaught of Typhoon Fengshen (locally known as Typhoon Frank). Of the ship's 862 passengers and crew, only 48 survived while 67 were confirmed dead and 747 remain missing. A massive search-and-rescue, and then recovery and salvage operation, took place in the waters of San Fernando to remove remaining dead bodies and potentially dangerous cargo from the sunken ship. The wreck of the MV Princess of the Star still remains in the town's coastal waters.
San Fernando, Romblon