Washington Cotes was Dean of Lismore from 1747 until"Journal of the Royal Society of Antiquaries of Ireland" (Dublin, 1849) 1762; and Provost of Tuam from 1858 to 1862.Fryde, E. B.; Greenway, D. E.; Porter, S.; Roy, I., eds. (1986). Handbook of British Chronology (3rd, reprinted 2003 ed.). Cambridge: Cambridge University Press. .

He was educated at Trinity College, Dublin. His wife was born in 1722 and died in 1790."The baronetage of England" Debrett, J: London, Rivington, 1839 p338

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