Augustus Richard Butler was born on 10 July 1776. He was the son of Brinsley Butler, 2nd Earl of Lanesborough and Lady Jane Rochfort. He married, firstly, Mary Danvers, daughter of Sir John Danvers, Bt., on 8 March 1792.
He married, secondly, Eliza Bizarre Sturt, daughter of Humphrey Sturt, on 24 May 1802. He died on 26 April 1820 at age 43.
Child of Augustus Richard Butler and Mary Danvers
George John Danvers Butler, 5th Earl of Lanesborough b. 6 Dec 1794, d. 7 Jul 1866
Children of Augustus Richard Butler and Eliza Bizarre Sturt
Lady Emily Jane Butler-Danvers+1 d. 28 Mar 1895
Captain Charles Augustus Butler-Danvers+ b. 25 Sep 1809, d. 8 Aug 1849
Sources
"England and Wales Non-Conformist Record Indexes (RG4-8), 1588-1977," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:F477-9Q4 : 11 December 2014), Augustus Richard Butler Danvers, 29 Apr 1820, Burial; citing p. 64, Boulogne, France, record group RG33, Public Record Office, London.
"British Newspaper Archive, Family Notices," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QPCN-S6KG : 17 July 2018), Hon Augustus Richard Bulter Danvers, Norwich, Norfolk, England, United Kingdom; records extracted FamilySearch and images digitized by FindMyPast; citing Norwich, Norfolk, England, United Kingdom, 6 May 1820, The British Newspaper Archive, Ireland; FHL microfilm