The church's dedication is to
Saint Lawrence, the Roman deacon martyr. The first document to reference it dates to 1143, at which time it was referred to as
S. Laurentius in porticu maiore ("Saint Lawrence near the great
portico"), referring to its vicinity to the great Portico which in the Middle Ages connected
Pons Aelius with the
Old St. Peter's Basilica, stretching along the Borgo. The title
in piscibus, which first appeared in a 1205 bull of
Pope Innocent III, translates literally to "near the fishes". The name refers either to a fish market that was operated nearby, or the Roman de Piscibus family. Other variants on the church's name are
de piscibus ("of the fishes"),
ad pisces ("near the fishes"), and
in Borgo ("in the Borgo", the neighborhood in which it was – and still is – located). It was also called
San Lorenzolo or
Lorenzino, both meaning "little Saint Lawrence", to stress its tiny size. == History ==