When Mary Ellen Morgan was born on 12 March 1840, in Ogle, Illinois, United States, her father, John Carman Morgan, was 34 and her mother, Ellen Eleanor Wilcockson, was 26. She married Christopher Cox on 18 February 1858, in Poweshiek, Iowa, United States. They were the parents of at least 2 sons and 2 daughters. She lived in Deep River Township, Poweshiek, Iowa, United States in 1860 and Deep River, Poweshiek, Iowa, United States in 1870. She died on 22 May 1864, in Poweshiek, Iowa, United States, at the age of 24, and was buried in Dresden Cemetery, Deep River, Poweshiek, Iowa, United States.
Welsh (especially Glamorgan): from the medieval Welsh personal name Morgan, Morgant (Old Welsh Morcant, of uncertain etymology).
Irish: importation of the Welsh surname (see 1 above), to which has been assimilated more than one Gaelic surname, notably Ó Muireagáin (see Merrigan ).
Scottish: probably from a Gaelic personal name cognate with Welsh Morcant.