Mary Elizabeth DONNISON's parents were

James DONNISON
  b 12 Aug 1831, Liverpool
  d 3rd qtr 1900, Leigh, Lancashire
Mary SOUTHERN
  b <1835>, Manchester
  d 1884, Chorlton

She was married on 7 Feb 1885 at Hulme, Lancashire

Mary Elizabeth DONNISON
  b 1859 Manchester
John Herbert VERNON
  b 1858

They had two sons

John Southern VERNON
  b 8 Oct 1885, Chorlton upon Medlock, Cheshire
  d 22 Sep 1938, Todmorden, Yorkshire

Herbert VERNON