The first document that mentions the name of Trivignano is a patriarchal act, in 1184.
Nevertheless, the municipal area was already inhabited since ancient times, as the archaeological finds near the built-up areas confirm and as it was a place characterized by the migrations of Indo-European in the prehistoric and protohistorical Age.  
During the last century, some archaeological excavations pointed out Latin settlements in the Roman Age, particularly near big and small churches. This confirms once again the continuity and syncretism between the pre-Christian culture and the Christian civilization.
A matter of fact, the name of the village is derived from the Roman Age, when the fields of the countryside surrounding Aquileia were distributed and assigned to colonists, who reached Aquileia from 181 B.C. in several waves and from the central-southern Italy.  
The name Tissano has surely predial origins and is bound up with the Roman colonization period. Presumably, it comes from a colonist’s first name or form a Roman family, Tappulius or Tappulus, with the –anum as suffix, which indicates belonging. When the Romans colonized the area of Aquileia (from around 181 to 169 B.C.), they detected the most suitable fields to be cultivated and divided them in regular allotments called praedia (from the Latin praedium – holding), giving them the owner’s name. So, in the Roman Age this place was likely called praedium Tappulianum and later became – omitting the term praedium – Tavinianum- and finally Trivignano.
It lies near the torrent Torre, exactly where it receives the waters of the river Natisone. Therefore, this area is characterized by frequent overflows, floods and several river-beds’ displacements.
Its proximity to the river Torre made the village of Trivignano important in the arterial road system that took to and came from Aquileia. As a matter of fact, the Roman roads consisted of gravels and  slabs of stone, taken out easily from the river Torre than from any other waterway, as it is a torrential stream and there fore it is dry during many months. Furthermore, this way to pave the roads in the Roman Age in Latin was called viae strata, that is paved. From this term we have the Italian strada, the German Strasse, the English street. Such a road surface, needed a continuous maintenance, in order to pave the holes and cracks caused by the carts and the weather. For this reason, the excavation and extraction of gravel and stones should have been constant activities, which guaranteed work and  the development of such special activity in that area.  
Therefore, it may be possible that the today’s village rises on the remains of some Roman stationes, which were thatched roof buildings, mainly made of wood, placed at a fixed distance or at crossroads, bridges, fords, crossings, all places that followed the travel exigencies of that time.  
The stationes used exclusively to change the horses were called mutationes. These animals worked for the cursus publicus, the public post, or the cursus velox, light and fast coach service for the traveller transportation, or for the cursus clablarius, that dealt with the transportation of heavy goods. There were cattle sheds that could contain around forty animals and they stood at seven or ten-miles intervals in the most busy routes and at twelve-miles intervals in the most isolated areas.
Every six-eight mutationes stood the stationes, the traveller’s rest and refreshment area, called mansiones. Here people could spend the night and eat something, and often they trade in sheds or  inside a shelter. Sometimes, small places of worship sprang up.
A Roman road passed through this place and went from Aquileia to Cividale del Friuli and to the lands of the river Natison and Norico. This road explains why the necropolis was there, since the Romans used to bury the dead along the public roads. This custom was established by specific laws, because of two practical reasons. Firstly, those places had to be out of the built-up areas, not to foul them with the smell of the burning. Secondly, not to deduct too many fields from the agriculture.
The rural villas were big farmhouses located along the praedium, the farm, that housed slavery that worked in the fields and also the dominus, the owner of the property, and his family. These complete agricultural centres of production were generally built far away from the arterial routes, as to avoid unpleasant visits, robbery and pillages. Exactly, they were built from five to ten miles away from Aquileia and they were bigger as far as they were far from the Roman town.
Some remains of this kind of settlement were found in Casali Comune Marcotti, to the west of the helmet Clauiano. Also this name has Roman predial origins and it refers to Claudius (Roman surname) or Clavillius (from Clavius). The name is mentioned for the first time on July, 13th 1031, when Popone, the Patriarchate of Aquileia, unveiled the rebuilt Basilica, established the Chapter and gave him a wide area of the countryside surrounding Aquileia composed of several villas. One of them was Clauiano.