SANGGUNIANG BAYAN KAPASIYAHAN BLG. 28-2008:
"IPINASIYA, na ipabatid sa Kgg. na Punong Bayan at sa bumubuo ng komitiba ng kultura at sining na kinikilala ng Sangguniang Bayan ang deklarasyon ng kura paroko ng simbahang katoliko at ng komitiba ukol pagdiriwang ng kapistahan ng ating patron ang Sto. Rosario."
On January 19, 1909, Bishop (Gregorio) Aglipay celebrated the 1st Aglipayan mass in the Church of Rosario--gaining a foot hold in this part of Batangas for his church.
The Rosario town fiesta which was used to be celebrated on January 19, was moved to April 22 in the early 1920's, on the petition of students studying in Batangas and in Manila to give them time to attend the fiesta while on summer vacation.