Romualdez' siblings include Attorney Estela Zialcita Romualdez Sulit married to Mariano Sulit, Miguel Zialcita Romualdez Jr. married to Cecilia
Planas (distantly related to Rosario Planas), Alberto Zialcita Romualdez married to the Spanish mestiza Covadonga del Gallego of
Paco,
Manila (their son is former
Department of Health Secretary
Alberto Romualdez), Amelia Zialcita Romualdez Janairo married to ex-
Philippine Army chief engineer and
United States Army veteran Maximiano Janairo of
Cavite and
Virginia (both are buried in
Arlington National Cemetery), Froilan Zialcita Romualdez married to Josefina Siervo and
Philippine Central Bank Governor Eduardo Romualdez married to Concepcion Veloso, popularly nicknamed Conchita, who also hailed from a powerful
Leyte political family. He was married to Paz "Pacing" Gueco of
Magalang,
Pampanga, member of the Kahirup, an aunt of
Benigno Aquino Jr. from nearby
Concepcion,
Tarlac, and heiress to vast tracts of ricelands from her
Chinese-Filipino Gueco clan. He has four daughters. Seeing the potential of his cousin
Imelda Marcos, who was by then the undisputed Rose of Tacloban title holder and was renowned throughout the provinces for her singing voice, Danieling and other cousin Loreto Romualdez Ramos brought Imelda to Manila. His first cousin once removed, Daniel Gomez Romualdez, was a
New York City architect and son of former ambassador and governor
Benjamin Trinidad Romualdez (brother of
Imelda Marcos) and that of the son of Froilan Romualdez and Josefina Siervo named Daniel Siervo Romualdez. ==Political career==