Mainie Main, what is your real name and who was your mother?

Gene asked me to add a little more information so I am editing this, adding a little more info and attaching the census images.

I thought I would post another of my brickwalls. Mainie Main was born 19 Jan 1864 in probably Morrow co, Ohio. On 20 Apr 1884 she married Ellis Rhoades Powers in either Morrow or Delaware counties, OH. Lewis and Mainie had 5 children; Charlie Main, Orlando Ray, Roxie J, Don Lee and Anna Imogene. Lewis died 18 Oct 1901, without leaving a will. I have a petition to sell real estate filed by Maimie M Powers in Delaware county, Ohio filed Dec 1902. On 8 Jan 1905 Mainie married Charles Lutelles Browning. Mainie died 7 Oct 1932 and is buried in Morrow co, OH. All of that seems quite clear cut. My problem comes with wanting to find her real name. On the 1870 census her name is Mary. On 1880 she is listed as Manie. On 1900, 1910, and 1930 census she is Mamie, and in 1920 we are back to Manie. Finally on her death record she is Mainie and in her obituary she is Maria. Ok, it isn't a really big deal. She was probably named Mary or Maria with Mainie and Maimie as nicknames there was also a Minnie thrown in for good measure, but it doesn't stop here. I had searched for quite a while for her parents names. Finally when I received her death certificate I learned that they were Charles Main and Jennie Long. I now had the names and should be able to trace them in the census. That was when I realized her mother was playing the name game also. On the census records she is listed as Jenny, Jane and Mathena. All with the same place of birth, approximate age and parents birthplace, so I am pretty sure that it is one and the same person. She was born approx. 1846 in OH. There were 2 possible candidates for parents for Jennie, although neither is a perfect fit. After doing a census survey, here is what I came up with.
I believe that the parents of Jennie Long are either Lewis and Mary Long or Jacob and Mary Long. In both 1870 and 1880 Lewis lived next door to Charles and Jenny Main and Jacob lived a few houses away.

1840 United States Census
Harmony Twp, Delaware County, Ohio
Jacob Long, 1 male 20-29, 1 female 0-4, 1 female 15-19 (Jacob, Mary, Elizabeth)

1850 United States Census
Harmony Twp, Morrow County, Ohio
Jacob Long, 36, farmer, Maryland
Mary A, 25, Ohio (29?)
Elizabeth, 11, Ohio
George, 10, Ohio
Ann, 7, Ohio
William, 5, Ohio
Mathew, 4, Ohio (is this supposed to be Mathena?)

1850 United States Census
Harmony Twp, Morrow County, Ohio
Levi Evans, 27, farmer, Ohio
Mary, 31, Maryland
Gilbert, 4, Ohio
Phebe, 2, Ohio
Elizabeth Long, 62, Pennsylvania, $1300 personal property
Lewis, 24, Maryland, $1300 personal property

1860 United States Census
Harmony Twp, Morrow County, Ohio
Jacob Long, 46, farmer, Maryland
Mary A, 39, Ohio
Ann, 18, Ohio
George, 19, Ohio
William, 16, Ohio
Martha, 11, Ohio ( Mathena? could the age be 14 instead of 11?)
Olive, 8, Ohio
Etina, 5, Ohio

1870 United States Federal Census
Harmony Twp, Morrow County, OH
Page 9 65/68
Jacob Long 57 m farmer, $1800 $1300 Maryland
Mary, 47, f, keeping house, Ohio
William, 25, m, farm labor, Ohio
Oliza, 17, f, at home, Ohio
Elura, 13, f, at school, Ohio
Emma, 8, f, Ohio

Harmony Twp, Morrow County, OH
page 17 126/132
Lewis Long, 52, m, farmer. 600, Maryland
Mary, 41, f, Ohio
Mary R, 11/12, Ohio
Elizabeth Fusa, 18, f, Illinois
Susan Fusa (could be Foss), 11, f, Michigan
Eliza Fusa, 9, f, Indiana

page 17 127/133
Charles Main, 27, m, farmer, $1000, Ohio
Mathena, 24, f, keeping house, Ohio
Mary, 6, f, Ohio

1880 United States Federal Census
Harmony Twp, Morrow County, Ohio
Sheet # 3
Page # 268 c
Enumeration date 9/10 June 1880

28/29
Jacob Long, m, 65, married, Maryland, Maryland, Maryland
Mary A, f, 55, wife, married, Ohio, New York, New York
Elura, f, 23, daughter, single,house keeper, Ohio

29/30
Lewis Long, m, 60, married, farmer, Maryland, Maryland, Maryland
Mary, f, 50, wife, married, Ohio, Ohio, Ohio
Mary R, f, 10, daughter, single, Ohio, Ohio, Ohio
Eliza Fusa, f, 20, stepdaughter, housekeeper, Indiana
Powell Fusa, m, 3/12, Oct, Ohio

31/32
CW Main, m, 38, married, farmer, Ohio, ?, ?
Jane, f, 34, wife, married, Ohio, Maryland, Ohio
Manie, f, 16, daughter, single, Ohio, Ohio, Ohio

Lewis Long married Mary Foss on 5 Apr 1865 in Morrow Co, OH

I think I have worked on this problem for way too long because it is now totally confusing to me. Any suggestions?
I have attached the census records that I was speaking of but since I can't add all of them in this post I will start a new post with the rest of the census records