Dueñas had its foundation and Christianization in 1590 with the name of In 1599, it was moved to Sibucao. Four years later (1603) she was joined to Dumangas and two years later in 1605 she enjoyed her independence.
In 1608, she was transferred to Laglag, now Barangay Pader, Dueñas, and remained in this place for 59 years or until 1667. It had only five barrios, namely: Sibucao and Sumandig in the lowlands; and Misi, Camantugan and Malonor in the upland.
In 1668, Laglag was joined to Passi, only to be separated a year after (1669). From 1669 to 1844 or for a period of 175 years, Laglag still remained in the said site. (This was for reason that most of the family name of the residents of Dueñas begin with letter “L” ). But later in 1845, Laglag was moved around four kilometers eastward and given a name Dueñas in memory of the birthplace (Dueñas, Palencia, Spain) of Fr. Florencio Martin, who authored the transfer. Saint Jerome, Doctor of the Church, is the Patron Saint of Dueñas.
The word “Dueñas” or “Dueña” is derived from a Latin word domna or domina, which means landlady or madam who has dominion over a certain house or estate.