Elizabeth is the daughter of Adam Oliver and Mary Marshall.

National Archives
Passengers Who Arrived at the Port of New York During the Irish Famine, 1/12/1846 - 12/31/1851
Eliza Oliver
Born at Sea
Native Country Ireland
Destination USA
Port of Embarkation Liverpool
Manifest ID Number CONSTITUTION 004 08-11-1849 205
Passenger Arrival Date 08/11/1849

Adam Oliver "was a fisherman and boat-builder, and came to America in 1848 with his family, establishing his home near Rochester, New York... In his family were five sons and four daughters, of whom two sons and three daughters are yet living: James...; Robert, of this review. Mary Jane, the wife of James Gilmore, of Rockford; Martha, who is the widow of William Miller, and resides in South Dakota; and Eliza, the wife of T. W. Allen, also living in South Dakota."
~Past and Present of the City of Rockford and Winnebago County, Illinois by Charles A. Church , S.J. Clarke Publishing Company, 1905

1855 New York State Census
Chili, Monroe, New York
Adam Oliver 58 Ireland laborer
Mary 53 Ireland
Martha 11 Ireland
Eliza 8 Ireland

1860 Federal Census
Town Of Burritt, Winnebago, Illinois
Adam Oliver 61 Ireland
Mary 56 Ireland
John 32 Ireland
Eliza 14 Ireland

Groom Titus W Allen
Bride Elizabeth Oliver
Marriage 17 Nov 1864
Winnebago, Illinois
~Illinois, Winnebago County Marriages

1870 Federal Census
Jenkins Twp, Mitchell, Iowa
T W Allen 28 New Brunswick
Eliza Allen 24 Ireland
Clara Allen 4 Illinois
William Allen 2 Illinois

1880 Federal Census
Jenkins, Mitchell, Iowa
Titus W Allen Self 38 Canada
Elizabeth Allen Wife 34 Ireland
Clara Allen Daughter 13 Illinois
William J Allen Son 11 Illinois
Wesley J Allen Son 9 Iowa
Elizabeth Allen Daughter 4 Iowa
Mary Allen Daughter 7 Iowa
Martha J Allen Daughter 0 Iowa

1900 Federal Census
Winsor Twp, Brookings, South Dakota
Titus W Allen 58 New Brunswick Eng Mar 1842
Elizabeth Allen 54 Ireland May 1846
Aubrey O Allen Son 16 S Dak Jun 1884
Arleigh T Allen Son 14 S Dak Jul 1886
Martha J Winsor Daughter 20 S Dak May 1880
Sidney A Winsor Grandson 5 S Dak Oct 1895
Carl Winsor Grandson 2/12 Neb Mar 1900
Also on the 1900 Census at Crawford Vlg, Dawes, Nebraska, is
William R Winsor Lodger 31 Iowa, along with 10 other men.

1910 Federal Census
Arlington, Denver Twp, Kingsbury, S Dak
Aurby Allen Head 26 South Dakota
Cora Allen Wife 26 South Dakota
Florence Allen Daughter 4 South Dakota
Frencus Allen Daughter 1 South Dakota
Titus Allen Father 68 Canada Widower

Children

Arleigh T

1910 Federal Census
Oldham, Kingsbury, South Dakota
Arleigh T Allen 24 S Dak Hotel Cook residing in household of Frank Hyde

Martha J Winsor

1910 Federal Census
Clear Lake, Kidder, North Dakota
William Winsor Head 42 Iowa
Martha Winsor Wife 30 Iowa
Sydny Winsor Son 14 S Dak
Leota Winsor Daughter 8 S Dak
Cleo Winsor Daughter 4 N Dak
Esther Winsor Daughter 2 N Dak