A native of Stratford-upon-Avon, he was educated at Eton and King's College, Cambridge. He held incumbencies at Sturminster Marshall, Beccles, Brightwalton and Hartfield. His will was dated 9 May 1483; and was proved on 23 August: he requested burial at Exeter Cathedral 
Plemth founded a chantry at King's College, Cambridge, where he was bursar; he was one of a group of Fellows of the period who endowed priests to sing in King's College Chapel. For this gift of 160 marks Plente was listed as a benefactor of King's, and its terms included a requirement that he should be commemorated annually (it is not clear that he was in fact buried at Exeter, rather than King's). A bequest of his own to Sir John Atkins led to his being remembered also (will of Atkins from 1487).
- ”Chichester Diocese Clergy Lists:Clergy succession from the earliest times to the year 1900" Hennessy,G: London, St Peter's Press, 1900
- Venn database entry
- David Lepine (1995). A Brotherhood of Canons Serving God: English Secular Cathedrals in the Later Middle Ages. Boydell & Brewer Ltd. p. 171. ISBN 978-0-85115-620-0. Retrieved 27 May 2012.
- Charles Henry Cooper (22 March 2012). Memorials of Cambridge. Cambridge University Press. p. 212. ISBN 978-1-108-04394-6. Retrieved 27 May 2012.
- Thomas Fuller (1840). The history of the University of Cambridge ... to the year 1634, ed. by M. Prickett and T. Wright. p. 152. Retrieved 27 May 2012.
- Collectanea Cantabrigiensia, or Collections relating to Cambridge, University, town, and county,: containing the monumental inscriptions in all the chapels of the several colleges, and parish churches in the town, and in several others in the county; with a list of the mayors; the most ancient charters of the town; and other historical memoirs of several colleges, &c. Printed for the author, at his house in St. Giles's parish in the city of Norwich. 1751. p. 130. Retrieved 27 May 2012.
- Gordon Mursell (1 September 2001). English Spirituality: From Earliest Times to 1700. Westminster John Knox Press. p. 200. ISBN 978-0-664-22504-9. Retrieved 27 May 2012.
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