Trying to extend the information already given by you and your responses received I summarise what may be speculation or a draft tree, and add a few notes.
James Ferguson m Esther Blevins who lived in the townland of Ballymorin/BALLYMORAN Lisnadill in Armagh District.)
Notes Griffiths Valuation see
http://www.askaboutireland.ie in 1864, has just two
Blevins homesteads both in
Cavanacaw townland, Lisnadill civil parish 1. James Blevins Map Reference 18 . 2. John Blevins Map Reference 17 Notes there are 81 other references for Ferguson in Co Armagh
Ferguson’s homesteads both in Lisnadill, 1. William Ferguson
Latmacollum Map Reference 2. 2. William Ferguson
Ballybrolly Map Reference 1. Notes there are 32 other references for Ferguson in Co Armagh
James and Esther ‘s children others unknown at this stage
1.
William George Ferguson c1858 Armagh farmer marries in 1883
Amelia Hampton born c1858 Armagh It could be Amelia dies 1921 see "Ireland, Civil Registration Indexes, 1845-1958," index, FamilySearch (
https://familysearch.org/pal:/MM9.1.1/FRLY-62K : accessed 24 Oct 2014), DEATHS entry for Amelia Ferguson; citing Armagh, Apr - Jun 1921, vol. 1, p. 43, General Registry, Custom House, Dublin; FHL microfilm 0101608.
William and Amelia’s children others unknown at this stage
1.
James Ferguson b 1885 see below This entry presumed from your interpretations OK?
2.
Christopher born c1886 Newcastle Upon Tyne and Armagh
3.
Alice born c1891 Armagh (only on 1901 looks like she died before 1911) But there is in 1911 a kitchen maid Alice Mary Ferguson b co armagh aged 22 with Leslie family in Glaslough (Glaslough, Monaghan) or later another Alice marries "Ireland, Civil Registration Indexes, 1845-1958," index, FamilySearch (
https://familysearch.org/pal:/MM9.1.1/FYFW-ZYC : accessed 24 Oct 2014), MARRIAGES entry for Alice Ferguson; citing Armagh, Jan - Mar 1918, vol. 1, p. 47, General Registry, Custom House, Dublin; FHL microfilm 101264.
4.
Esther born c1894 Newcastle Upon Tyne and Armagh In English births there is an Esther b Long Benton Newcastle Upon Tyne 1892 possibly another b1893 familyseach .com
5.
William George born 1901 Armagh
Notes on
1. James Ferguson age 29 [1885?]bachelor signalman 16 L.Victoria street, Belfast father William George Ferguson farmer married Marcella Montgomery age 23 spinster
38 Rosapenna Street, Belfast father James Montgomery soldier witnesses Christy and Esther Ferguson 3 August 1914 St Annes Church Belfast
In 1918 there is a James ferguson living in Railway St Dunmurry could this be the railway cottages ?childrenJames Ferguson born 22 June 1915 Omagh
Mary Amelia Ferguson no idea of when or where she was born but she died 9 October 1945 Belfast How do you know this please if not private
Other note kept I found and wondered about a William George Ferguson age 31 in the English census 1861 staying at Alice Deans boarding house in CHARLOTTE STREET Parish ELSWICK NEWCASTLE ON TYNE Birth Co Armagh LODGER Occupation GAS STOKER MARRIED
Hoping something of value to carry you onwards JimG