Segunda Katigbak was born in 1863 in Lipa, Batangas. She was the daughter of Don Norberto Catigbac y Do単a Justa Sol鱈s y Luz and had several siblings including Mariano, Maria Carmina, Maria Ynes, Norberto Jr., and Mauricio. Segunda was Jose Rizal's "first love" whom he met while they were both students at La Concordia College in Manila. After 3 years, their relationship ended which left Rizal mourning the loss of his "virgin heart" and feeling indifferent and uncertain about love going forward. In Rizal's diary, Segunda was referred to by the code name "K".