91:, which provide a number of astrological techniques dedicated to horary and electional astrology, including a section on discovering the intention of the questioner. This manuscript was first analysed in detail by Nicholas Whyte in 1991, in which Whyte suggested that a horoscope in this manuscript was that of
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at
Hereford in 1178. It is probable that he and the Roger Infans attested in charters at Hereford (1186 - 1198), are one and the same.
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Roger's nationality, year of birth, and education are unknown. The earliest record dates to a commission in 1176 by
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for the calculation of ecclesiastical dates. In this treatise Roger criticizes the calculations of
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https://archive.org/details/historyofmagicex02thor/page/170/mode/2up?q=%22roger+of+hereford%22
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https://archive.org/details/herefordiapoem00jame/page/n11/mode/2up?q=%22roger+of+hereford%22
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Roger's connection with
Hereford are established by calculations in his tables setting the
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Roger of
Hereford's Liber de Astronomice iudicandi: A twelfth-century astrologer's manual
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is dedicated to Roger. Roger may be credited for a new method of calculating horoscopes.
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as used in the standard text of the time, and draws on Hebrew and Arabic learning.
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31:); a medieval astronomer, astrologer, alchemist and mathematician active in
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Roger's importance rests largely as a transmitter of the scholarship of
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Roger of
Hereford's Judicial Astrology: England's first astrology book?
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Roger of
Hereford's Judicial Astrology: England's First Astrology Book?
124:, with whom Roger shared a household in his latter years at Hereford.
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A subsequent more detailed analysis of all 22 extant manuscripts of
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was undertaken as a PhD thesis by Chris
Mitchell at the
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70:Liber de Quatuor Partibus Judiciorum Astronomie
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211:Oxford Dictionary of National Biography
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153:Oxford Dictionary of National Biography
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76:, and translations of Arabic texts by
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207:"Hereford, Roger of (fl. 1176–1198)"
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331:12th-century English mathematicians
277:(thesis), University of Leicester,
182:(thesis). University of Leicester.
120:and the ancient authors, including
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149:Hereford, Roger of (fl. 1176–1198)
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87:Roger wrote an astrological text,
14:
352:
176:Mitchell, Christopher J. (2020).
283:10.25392/leicester.data.11793636
188:10.25392/leicester.data.11793636
326:12th-century English scientists
298:12th-century English astronomer
68:Roger's astronomical treatise,
1:
341:12th-century writers in Latin
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316:12th-century English writers
311:Medieval English astronomers
237:UK public library membership
127:
7:
10:
357:
205:Burnett, Charles (2004).
336:12th-century astronomers
271:Mitchell, Chris (2020),
254:Whyte, Nicholas (1991),
215:Oxford University Press
104:University of Leicester
223:10.1093/ref:odnb/23955
321:Medieval orientalists
21:Rogerus Herefordensis
111:Alfred of Shareshill
93:Eleanor of Aquitaine
82:Hermann of Carinthia
74:Raimond de Marseille
35:circa. 1178 - 1198.
122:Robert Grosseteste
100:Judicial Astrology
89:Judicial Astrology
44:Bishop of Hereford
235:(subscription or
109:A translation by
17:Roger of Hereford
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48:Bishop of London
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118:Adelard of Bath
78:Juan de Sevilla
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40:Gilbert Foliot
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46:and then the
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226:. Retrieved
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25:Roger Infans
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288:17 February
263:17 February
72:, draws on
305:Categories
199:References
29:Roger Puer
239:required)
147:Burnett "
128:Citations
63:meridian
52:computus
33:Hereford
163:Whyte "
56:Gerland
50:, of a
228:20 May
27:, or
23:, or
290:2021
265:2021
230:2010
80:and
19:(or
279:doi
219:doi
184:doi
307::
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209:.
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136:^
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95:.
84:.
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