Upon assuming office as viceroy of India, Dom Constantino de Bragança sought to reinforce the security of Portuguese Bassein by establishing a new stronghold at nearby Daman, which the Portuguese governor of India Francisco Barreto had previously obtained from the Sultan of Gujarat Ahmad Shah III as a concession but was unable to take possession of it due to the resistance of the lord of the territory, whom the Portuguese identified as Cide Bofata, who rebelled against the decision of the sultan and gathered 4000 men to defend it.

[1] By liberality and other means, Dom Constantino compelled the native inhabitants who had fled to return to their homes.

[1] The viceroy also confirmed the rights over the customs of Daman to the neighbouring King of Sarceta, a nearby mountain ruler.

[4] Having secured the region, Dom Constantino established a garrison of 1200 men at Daman, upon which he returned to Goa, capital of Portuguese possessions in Asia.

[1] After the acquisition of Bassein in 1534 and Diu in 1535, Portuguese grip on navigation in the Gulf of Khambat became even tighter, making it increasingly difficult for Indian ships to travel without acquiring a cartaz, and the invicibility of Portuguese fleets terrified the Gujaratis into accepting the system.