Petrus Wilhelmi de Grudencz (EN)

Petrus Wilhelmi de Grudencz or Piotr of Grudziądz, *1392 Grudziądz, †after 1452, poet and composer. He came from the State of the Teutonic Order in Prussia from a German family of knightly descent. In 1418, he began studying in Krakow, obtaining a bachelor’s degree in 1425 and a master’s degree in liberal arts in 1430. From around 1440 he was in Vienna; records attest to his presence in 1442 at the court of the German king and later emperor Frederick III, where he served as a chaplain, although he did not belong to the musical chapel. His poem Pontifices ecclesiarum indicates connections with the Council of Basel. In 1448 he was probably in Silesia, where he gained the support of the Bishop of Wrocław in his unsuccessful efforts to obtain the position of canon of the cathedral in Frombork. In 1452, together with the court of Frederick III, he went to Rome, where he applied to the papal chancery for a pension in exchange for resigning from his position as parish priest in the village of Białogarda near Lębork. A seal bearing his name, discovered at an archaeological site at Teplice Castle, suggests that in the 1450s he may have spent time in present-day Slovakia. The date and place of death of Petrus Wilhelmi de Grudencz are unknown, and earlier assumptions about his stay in Silesia around 1480 are not confirmed by sources.

Petrus Wilhelmi de Grudencz’s compositions have been preserved in 47 manuscripts and 3 printed works. The provenance of these sources outlines the geographical scope of his influence, which encompassed areas of Poland, Bohemia, Slovakia, Austria, South Tyrol, and central and southern Germany.  The earliest records of Petrus Wilhelmi de Grudencz’s work date from around 1420 and come from a student notebook produced in Krakow, while the latest date to the early 17th century from Bohemia and Silesia. Some of his songs, motets and canons enjoyed great popularity, particularly in circles associated with educational institutions (universities, schools) and monasteries, and from around 1450 also among Utraquist literary confraternities in Bohemia.  Frequently copied, his works underwent transformations in terms of meter, rhythm, counterpoint, and form, and by substituting new texts (in Latin, Czech, or German), which often makes it difficult to reconstruct their original form. An example of a song that has been repeatedly reworked is Prelustri elucencia, known from 20 copies in 18 manuscripts and prints, including a three-voice arrangement in V. Triller’s Lutheran songbook (published in Wrocław in 1555 and 1559). The canon Presulem ephebeatum was quoted by later composers, including H. Isaac, who used it as the cantus firmus for his Presulem ephebeatum mass.

The oeuvre of Petrus Wilhelmi de Grudencz is predominantly devotional in character, though some works are liturgical (e.g., Kyrie fons bonitatis) or secular (e.g., Probitate eminentem / Ploditando exarare). He is the author not only of the music but also of the texts of all works attributed to him, except for Kyrie fons bonitatis. In poems written in the popular late-medieval verse form (typically four-line stanzas with alternating eight- and seven-syllable verses and an abab rhyme scheme), the composer’s name “Petrus” is encoded as an acrostic, whereas in the motet Pneuma eucaristiarum, his full name “Petrus Wilhelmi de Grudencz” appears. Petrus Wilhelmi de Grudencz’s poetry, rich in neologisms and borrowings from Greek, does not display many original features, but gains value when combined with music. Only the song Pontifices ecclesiarum, preserved without notation and of a propagandistic nature, shows more advanced rhetorical devices Petrus Wilhelmi de Grudencz was primarily a composer of Latin polyphonic songs in the Central European cantio style. These works are most often for two or three voices, written in nota contra notam texture or with more elaborate upper voices and an untexted tenor, and are structured in two sections (versus and repeticio), both ending with identical cadences.  Part 1 often begins with an elaborate melisma on the first syllable, while part 2 sometimes features an echo effect or a change of metre. This type of song was referred to in fifteenth-century Central European sources as a “rondellus”. Less common are two-part songs with two cadences in each part (e.g., Plaude euge theotocos), as well as one-part songs (e.g., Psalteriis et timpanis) and three-part songs (e.g., Presidiorum erogatrix). Prodigiis eximiis (c. 1450) presents a unique example of the use of fauxbourdon technique in connection with the cantio genre. Polytextual motets follow the Central European motet tradition, featuring a texted tenor without a cantus firmus. The voice leading often resembles that of songs, and the rhythm is straightforward. In Pneuma eucaristiarum, Petrus Wilhelmi de Grudencz draws on the anonymous motet Veni sancte spiritus / Da gaudiorum from the late 14th century, with a multi-texted first section and a single-text second section resembling a dance song. Two of his motets feature an isorhythmic tenor, which in Probitate eminentem / Ploditando exarare can be interpreted as a reference to Ars Nova motets. Three canons by Petrus Wilhelmi de Grudencz are rounds (referred to as rotulum in fifteenth-century Central European theory), whereas Panteleon eleon belongs to the rare genre katschetum, featuring a round in the three upper voices with a repeated tenor. Unlike many of his songs, in which triple meter predominates, these works are set in simple duple meter.  A different style is represented by Kyrie fons bonitatis, closer to the international works of the 1440s, composed in a three-voice song-like texture with a paraphrased choral melody in the top voice and elements of fauxbourdon harmony. This work quotes a musical trope known only in Prussia and Silesia.  Some of Petrus Wilhelmi de Grudencz’s compositions feature wordplay, onomatopoeia and comic dialogues (e.g. Presulem ephebeatum). Probitate eminentem / Ploditando exarare, written in the style of a panegyric motet, is in fact satirical, with its hidden meaning further revealed through numerical symbolism.

Petrus Wilhelmi de Grudencz, discovered in the early 1970s by Czech musicologist J. Černý, is now considered the most important representative of 15th-century Central European music. His original work is gaining increasing recognition among scholars, performers and audiences. Between 2015 and 2019, the Piotr of Grudziądz Early Music Festival was held in Grudziądz. Ensembles such as Schola Gregoriana Pragensis, Ars Cantus and La Morra keep his works in their regular repertoire.

Literature: J. Černý Petrus Wilhelmi de Grudencz – neznámý skladatel doby Dufayovy v českých pramenech, “Hudební věda” 1975 no. 3; J. Černý Petrus Wilhelmi of Grudziądz. An Unknown Composer of the “Age of Dufay” MAEO. Acta Scientifica IV, Bydgoszcz 1975; M. Perz Fragmenty lwowskie. Źródło dzieł Dufaya, Josquina, Petrusa de Domarto i P. z Grudziądza w Polsce XV in “Muzyka” 1989 no. 3; M. Staehelin Neues zu Werk und Leben von Petrus Wilhelmi. Fragmente des mittleren 15. Jahrhunderts mit Mensuralmusik im Nachlaß von Friedrich Ludwig, Göttingen 2001; Heinrich Isaac (ca 1450–1517): Missa Presulem ephebeatum, ed. M. Horyna, Prague 2002; M. Horyna Utwory P. Wilhelmiego z Grudziądza w tradycji polifonii późnośredniowiecznej w Europie Środkowej, a zwłaszcza w Czechach XV i XVI w. and M. Staehelin Uwagi o wzajemnych związkach biografii, twórczości i dokumentacji dzieł P. Wilhelmiego z Grudziądza, “Muzyka” 2004 no. 2; P. Gancarczyk “Presulem ephebeatum” by Petrus Wilhelmi de Grudencz and the Musical Identity of Central Europe, in: Musikalische Repertoires in Zentraleuropa (1420–1450). Prozesse & Praktiken, ed. A. Rausch and B.R. Tammen, Vienna 2014; P. Gancarczyk “Probitate eminentem / Ploditando exarare” Petrusa Wilhelmiego de Grudencz – środkowoeuropejska inkarnacja motetu izorytmicznego, in: Ars musica and its Contexts in Medieval and Early Modern Culture, ed. P. Gancarczyk, Warsaw 2016; B. Awianowicz Texts by Petrus Wilhelmi de Grudencz in the Context of Late Medieval “ars poetriae”, “Muzyka” 2017 no. 3; J. Ciglbauer, P. Gancarczyk Manuscript RC 4 from the Silesian Museum in Opava and an Unknown Song by Petrus Wilhelmi de Grudencz, “Muzyka” 2017 no. 2; P. Gancarczyk Changing Identities of Songs by Petrus Wilhelmi de Grudencz, “Hudební věda” 2017 no. 1; P. Gancarczyk Petrus Wilhelmi de Grudencz i muzyka Europy Środkowej XV w., Warsaw 2021; R. Čambal, M. Budaj, J. Hrica Súbor nálezov z hradu Teplica, “Zborník Slovenského Národného Múzea” CXVI, 2022.