SeabraPortuguese Habitational name from the town of Puebla de Sanabria in northwestern Spain of uncertain meaning, possibly of Arabic, Celtic or Latin origin.
SeixasPortuguese Habitational name from any of various places called Seixas in Galicia, Spain, most likely derived from Galician seixo meaning "pebble, stone" (ultimately from Latin saxum).
SilviaPortuguese (Americanized) SILVIA is an Americanized version of the Portuguese surname Silva, which is derived from the Latin silvae and Portuguese silva words meaning “forest,” “woodland,” or “jungle.” This variation of the surname SILVA was often adopted by Portuguese immigrants upon arrival to the United States.