Tracing women is next to impossible unless they are Protestant and you can find an early marriage as C of Ireland
marriage records date from 1845-1862. RC no civil marriages
before 1864, although you can find Parish records on line.
There are 5 Margaret Allen marriages from 1850-1860 and no father William or Patrick. No Mark Allen marriage.
There are two online birth and marriage searcheswww.emeraldancestors.com
free to view/pay for a record
2 marriages for Mark Allen 1866 & 1882 but no Elizabeth
also 2 Samuel Allen's 1830 & 1848 but in Antrim not Armagh. The following source could be better:
An Irish History Foundation. A not for profit but fee paying. If records go back far enough
you can search by names and age/year born +/-
Go for the unusual names first like Henry, Samuel or even
Thomas, definitely Mark (rarely seen this early)
His sisters go for Lucinda and many Ellen's/Helen and especially Margaret is very common.
Some parish records don't start till civil registration in 1864, seems a lot of destroyed records there however, after
doing some cross matching between Allen's and McBride's I came up with a matching Parish. That is the Parish of
Armagh, and common townland which is probably the best match.
Armagh City, Charter School Lane, Townlands
Parish of Armagh, Town of Armagh and County of Armagh.
There are only 2 McBride's in 1862 and 9 Allen's living in that Parish (no Mark) as he has probably left by then.
The Parish of Armagh does have existing records, baptisms
from 1796-1900 and marriages 1802-1810, 1816-1823,1835-1900.
There are 40 Allen's in the current telephone book for Armagh, you could try searching through these. You could try matching them up to the census and see if you can find
a place you can separate so you could write to the Allen's there. There are only 12 McBride's so you might want to
try from that direction most are initials only which is annoying but there is a Samuel. Names run down through
decades in Irish families. An example would be:
William's siblings 8 names, each would have their own
families and name their children after their grandfather
and father and brothers and sisters, including his sister. My husband's family where we can only get back to 1813 has a William in everyone of his 13 children's, children and even today is a child of one of his grandchildren is name William.
I can't think of anything else that might help your search.
If you want to be contact you should make sure you keep your email address updated on rootsweb as if it takes awhile you need to have an address that works. I see so
many where someone tries to make contact 2-5 years later but
the contact is never answered.