Albertus de Brudzewo (?)
Circulum pro exitu geniture ab utero iuxta verbum Ptolomei 51 rectificare
‘(Munich, BSB, Clm 51) Circulum pro exitu geniture ab utero iuxta verbum Ptolomei quinquagesimum primum rectificare. Sit tempus datum geniture cuiuspiam in anno, die, horaque, pro quo quidem tempore figura celi sit inventa — (69vb) illum tota figura est rectificanda in tempore. De tabulis 12 domorum pro eleva… (?) poli et eg… (?) in qua nativitas facta est, si eas habes; si non, non, tunc inscipias canonem sequentem. Vero loco Lune tempore conceptionis habito… (70ra) Habita ascensione obliqua ascendentis — (70rb) singulas fractiones extrahes uti placebit’ (followed by tables ‘Tempus more occidentalis/orientalis’, f. 70rb-71r).
An extension of Centiloquium v. 51.
The extant MSS suggest that this text originated at the University of Cracow in the 1480s (and certainly before 1488, when most of MS Vatican, BAV, Pal. lat. 1439 was copied). Rosińska (with a question mark) and Markowski ascribe it to Albertus de Brudzewo, very plausibly so. In most copies, the text stands alone among various astrological material, but in four of them, it is part of a larger text. In MSS Cracow, BJ, 1856, and Karlsruhe, BLB, Rastatt 36 (f. 85r-85v), it forms most of the first canon of a treatise on the interpretation of nativities in 21 canones, which is one of the several versions of a Tractatus de scientia nativitatum commonly taught at the University of Cracow in the late fifteenth century and sometimes associated to Martin Bylica de Olkusz or to one Simon, perhaps Simon of Sierpc (on this treatise, see Rosińska, 1909-1910, and Markowski, 117 and 189). In MSS Basel, UB, O.III.31, and Paris, BnF, n.a.l. 208, it occurs as the opening chapter of a treatise on the establishment of nativities, most of whose material derives from the Canones concernentes nativitatem nati, a text written as an appendix to Albertus de Brudzewo’s judgement on a nativity of 6 April 1445, probably by Albertus himself or under his supervision (see MSS Paris, BnF, lat. 7350, f. 99r-135v; and Vatican, BAV, Pal. lat. 1439, f. 41r-66r, also Rosińska, 502, and Markowski, 103 – Markowski attributes it to Johannes Virdung of Hassfurt). In the Basel MS, this treatise bears the title ‘Liber continens canonem magistri Alberti de Pruzaff [Brudzewo] super nativitates et iudicia, coll<e>ctium (!) in universitate Cracoviensi’. To these copies one should add the lost MS St Petersburg, Biblioteka Gosudarstwiennaja Publicznaja im. M. J. Sałtykowa-Szczedrina (now Rossijskaja Nacionalnaja Biblioteka), Lat. F.XVII.74, s. XV, where our text occurs on f. 127r (‘De genitura. Circulum pro exitu geniture…’), apparently as part of a longer treatise (f. 104r-136r) entitled ‘De nativitate hominis liber quem dominus Albertus Brosevo, magister Cracovensis, operose collegit et fideliter’ (on this MS, which belonged to the Załuski collection, which was transferred back to Warsaw after the Revolution in 1922 and bombed in WWII, see L. Birkenmajer, Stromata Copernicana, Krakow, 1924, 101-103; Markowski, 9 and 314; and The Inventory of Manuscripts from the Załuski Library in the Imperial Public Library, eds O. N. Bleskina, N. A. Elagina, Warszawa, 2013, 136 (no. 696)). The details of the genesis and affiliation of this text requires more research.
G. Rosińska, Scientific Writings and Astronomical Tables in Cracow. A Census of Manuscripts Sources (xivth-xvith Centuries), Wrocław-Warszawa, 1984, 347; M. Markowski, Astronomica et astrologica Cracoviensia ante annum 1550, Firenze, 1990, 9-10.