Found this info on an Emma Ewins who I believe is the same Emma listed as the daughter of George Ewins b. Jun 1797 in Ash.
"Emma Ewins1,2
F, #16852, b. circa 1835, d. 23 December 1916
Her married name was Slyfield.1 Emma Ewins was born circa 1835 at Binfield, Berkshire England.1 She married John Round Slyfield, son of John Slyfield and Sarah Emma Griffiths, in 1860; and his marriage was recorded at Windsor record office in the September quarter 1860.1,2 Emma Ewins appeared on the census of 7 April 1861 at Easthampstead, Berkshire England, as Wife, age 26, birthplace Binfield, Berkshire.1 She appeared on the census of 2 April 1871 at Reigate, Surrey England, as Emma Round, wife, age 36, birthplace Binfield, Berkshire.3 She appeared on the census of 3 April 1881 at Amen Corner, Binfield, Berkshire England, as Emily Slyfield, head, widow, age 45, birthplace Easthampstead, Berkshire.4 She appeared on the census of 5 April 1891 at Binfield, Berkshire England, as Head, widow, age 60, birthplace Binfield, Berkshire.5 She died on 23 December 1916 at Nine Mile Ride, Wokingham, Berkshire England; and her death was recorded at Wokingham record office in the December quarter 1916.6,7 Her estate was probated on 1 May 1917; Slyfield Emma of Nine Mile Ride Wokingham Berkshire widow died 23 December 1916 Probate London 1 May 1916to John Round Slyfield cowman and George Slyfield carman
Effects £106 8s.7"
http://freepages.genealogy.rootsweb.ancestry.com/~macculloch/p277.htm#i16852