Juan Sierra (died 16 February 1374) was a Roman Catholic prelate who served as Bishop of Segovia (1370–1374) and Bishop of Orense (1367–1370).
[1] On 23 August 1361, Juan Sierra was appointed during the papacy of Pope Innocent VI as Bishop of Orense.
[1] On 3 October 1370, he was appointed during the papacy of Pope Urban V as Bishop of Segovia.
[1] He served as Bishop of Segovia until his death On 16 February 1374.
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