The Guild of Romanists or Confrérie van romanisten was a society which was active in Antwerp from the late 16th to the late 18th century. Its membership was made up of notables and artists from Antwerp who had visited Rome. It offered artists access to the networks of Antwerp's urban elites. 
The Guild was established in 1572 in Antwerp's Cathedral of Our Lady under the patronage of St. Paul and St. Peter and was therefore also known as the 'Broederschap van de HH. Petrus en Paulus' (Confrérie of St. Peter and Paul). It was a condition of membership to have visited Rome. The condition of having visited Rome to enjoy membership appears to have been strictly enforced and art historians accept membership of the Guild as evidence of visits to Rome that are (in the case of Fyt etc.) otherwise undocumented. 
The membership included canons, prosperous merchants, members of the local nobility, aldermen and leading artists. Total membership was capped at 25 members, which reinforced the exclusive character of the society.  Deans of the Guild were appointed annually.
After 1680 the Guild went into decline.  The Guild moved in 1681 for financial reasons to Antwerp's St George's Church and remained dormant for a few decades. It was revived in 1716 when the 'true and approved' relics of St. Peter and Paul were delivered to St George's Church by a Roman cardinal. The Guild was finally abolished in 1785 under the rule of the Emperor Joseph II of Austria.
A Magistrate Book (1576), the "LIBER CONFRATERNITATIS SANCTORUM PETRI ET PAULI EN ROMA' is kept in the State Archives of Belgium. 
The diversity of the membership offered artists a good opportunity to meet with potential patrons.  A similar social mediation role was played by the chambers of rhetoric and in particular the Violieren, which was the chamber of rhetoric of the Antwerp Guild of Saint Luke. Membership assisted artists further in raising their profile and prestige in society at large as well as among their fellow artists since only renowned artists were invited to join.
The non-artist members relied on membership of the Guild to consolidate their social standing since many of the artist members enjoyed an international reputation. 
The social role of the Guild was facilitated through the institution of an annual gastronomic dinner (the '(h)eerlyck maeltyt'), with excellent wines and copious servings of food. The dinner was hosted at different locations. 
The Guild further allowed "'art-pilgrims' to keep themselves up to date on news from Rome, whether it be on new painters or paintings, or newly discovered antiquities". 
Jan Brueghelthe Elder was a Flemish painter and draughtsman. He was the son of the eminent Flemish Renaissance painter Pieter Bruegel the Elder. A close friend and frequent collaborator with Peter Paul Rubens, the two artists were the leading Flemish painters in the first three decades of the 17th century.
Frans Snyders or Frans Snijders was a Flemish painter of animals, hunting scenes, market scenes and still lifes. He was one of the earliest specialist animaliers and he is credited with initiating a wide variety of new still-life and animal subjects in Antwerp. He was a regular collaborator with leading Antwerp painters such as Peter Paul Rubens, Anthony van Dyck and Jacob Jordaens.
Abraham Janssens I, Abraham Janssen I or Abraham Janssens van Nuyssen (1575–1632) was a Flemish painter, who is known principally for his large religious and mythological works, which show the influence of Caravaggio. He was the leading history painter in Flanders prior to the return of Rubens from Italy.
Jan Fijt or Johannes Fijt was a Flemish Baroque painter, draughtsman and etcher. One of the leading animaliers of the 17th century, he was known for his refined depictions of animals and his lush hunting pieces.
Hendrick van Balen or Hendrick van Balen I was a Flemish Baroque painter and stained glass designer. Hendrick van Balen specialised in small cabinet pictures often painted on a copper support. His favourite themes were mythological and allegorical scenes and, to a lesser extent, religious subjects. The artist played an important role in the renewal of Flemish painting in the early 17th century and was one of the teachers of Anthony van Dyck.
Thomas Willeboirts Bosschaert was a Dutch Republic-born Flemish Baroque painter.
The Antwerp School was a school of artists active in Antwerp, first during the 16th century when the city was the economic center of the Low Countries, and then during the 17th century when it became the artistic stronghold of the Flemish Baroque under Peter Paul Rubens.
Maerten de Vos, Maerten de Vos the Elder or Marten de Vos was a Flemish painter. He is known mainly for his history and allegorical paintings and portraits. He was, together with the brothers Ambrosius Francken I and Frans Francken I, one of the leading history painters in the Spanish Netherlands after Frans Floris career slumped in the second half of the sixteenth century as a result of the Iconoclastic fury of the Beeldenstorm.
Theodoor Rombouts was a Flemish painter who is mainly known for his Caravaggesque genre scenes depicting lively dramatic gatherings as well as religiously-themed works. He is considered to be the primary and most original representative of Flemish Caravaggism. These Caravaggisti were part of an international movement of European artists who interpreted the work of Caravaggio and the followers of Caravaggio in a personal manner.
Peter Snayers or Pieter Snayers (1592–1667) was a Flemish painter known for his panoramic battle scenes, depictions of cavalry skirmishes, attacks on villages, coaches and convoys and hunting scenes. He established his reputation mainly through his topographic battle scenes providing a bird's eye view over the battlefield. He further painted large landscapes and portraits of the aristocracy. He was a regular collaborator of local landscape painters and also Rubens.
Sebastiaen Vrancx, Sebastiaan Vrancx or Sebastian Vranckx was a Flemish Baroque painter and draughtsman who is mainly known for his battle scenes, a genre that he pioneered in Netherlandish painting. He also created landscapes with mythological and allegorical scenes, scenes with robbers, village scenes and celebrations in cities. He was a gifted figure painter who was regularly invited to paint the staffage in compositions of fellow painters.
Cornelis Schut was a Flemish painter, draughtsman, engraver and tapestry designer who specialized in religious and mythological scenes. Presumed to have trained under Rubens, he treated Counter-Reformation subjects in a High-Baroque style. After a stay in Italy, he worked mainly in Antwerp where he was one of the leading history painters in the first half of the 17th century.
Daniël Seghers or Daniel Seghers was a Flemish Jesuit brother and painter who specialized in flower still lifes. He is particularly well known for his contributions to the genre of flower garland painting. His paintings were collected enthusiastically by aristocratic patrons and he had numerous followers and imitators.
Jan Wildens was a Flemish painter and draughtsman specializing in landscapes. His Realist landscapes show an eye for detail and have a serene character. He was a regular collaborator with Rubens and other leading Flemish Baroque painters of his generation in whose compositions he painted the landscapes.
Gerard Seghers was a Flemish painter, art collector, and art dealer. After a period of study and residence in Italy, he returned to Flanders where he became one of the leading representatives of the Flemish Caravaggisti movement. In his later career he abandoned the Caravaggist style and genre motifs to become an important painter of large altarpieces for local churches.
Sir Peter Paul Rubens was a Flemish artist and diplomat from the Duchy of Brabant in the Southern Netherlands. He is considered the most influential artist of the Flemish Baroque tradition. Rubens's highly charged compositions reference erudite aspects of classical and Christian history. His unique and immensely popular Baroque style emphasized movement, colour, and sensuality, which followed the immediate, dramatic artistic style promoted in the Counter-Reformation. Rubens was a painter producing altarpieces, portraits, landscapes, and history paintings of mythological and allegorical subjects. He was also a prolific designer of cartoons for the Flemish tapestry workshops and of frontispieces for the publishers in Antwerp.
Vincent Malo or Vincent Malo I was a Flemish painter who after training and working in Antwerp was mainly active in Italy, where he was known, amongst others, as Vincenzo Malo, Vincenzo Malò and Vincenzio Malo. Vincent Malo painted genre scenes as well as religious and mythological subjects and, occasionally, portraits.
Cornelis van der Geest was a spice merchant from Antwerp, who used his wealth to support the Antwerp artists and to establish his art collection. He was also the dean of the haberdashers guild.
Arnold Frans Rubens or Rubbens (1687–1719) was a Flemish Baroque painter who specialized in cabinet pictures of landscapes and battle scenes.
Abraham Godijn or Abraham Godyn was a Flemish painter who, after a stay in Italy, worked for a time as a court painter in Prague where he produced magnificent Baroque frescos. He later returned to Antwerp.