Della Jane (Clair) McNeil, 1880-1939, Big Flats, NY

DELLA JANE CLAIR married ITHIEL McNEIL some time around 1911.
Della was born in 1880 in PA and died 5-22-1939 in Big Flats, NY.I have several other dates for her birth year of 1881 & 1886 but her grave marker says 1880.
Ithiel was born 4-29-1884 Caton, Steuben Co., NY and died 11-15-1936 in Big Flats, Chemung Co., NY.

Della's parents are:
F. MONROE CLAIR 1847-1906 & MERCY R. CLAIR 1852-1909.
Both are buried next to Della in Rural Home Cemetery, Big Flats, NY with Father and Mother on the top of their respective markers.

Ithiel & Della's children are:
1. Walter Frank McNeil b.1912 Torrey, Yates Co., NY d.3-12-1942 Elmira, Chemung Co., NY.
2. George Thomas McNeil (Tom) b.4-5-1915 Big Flats, Chemung Co., NY d.1-2-1985 Lakeland, Polk Co., FL. (my grandfather).
3. Eva Louise (McNeil) (1)Granger (2)Kline b.3-15-1917 Elmira, Chemung Co., NY d.6-22-1985 Elmira, Chemung Co., NY.

"Families of Jackson Township, Tioga County, PA" says the following:
"MELISSA BRYAN b. Apr 1827 m. JOHN CLAIR b. Apr 1823 son of HENRY and JANE CLAIR of Jackson Township.Farmer in Jackson 1860, 1870, 1880. Enumerated with daughter Ella McLane and family in Wells Township, Bradford County, Pennsylvania in 1900. Melissa also enumerated with daughter Nettie and her husband in Horseheads, Chemung County, New York in 1900.

FRANCIS MONROE CLAIR b. c. 1847.
ELLA D. CLAIR b. Mar 1849 m. David C. McLane, resided Wells Township, Bradford County.
MATILDA CLAIR b. c. 1853.
ISABELLE CLAIR b. c. 1858.
NETTIE E. CLAIR b. June 1866 m. 7 Dec 1892 Jasper A Woodford and she d. 7 July 1917 Blossburg, Pennsylvania buried Woodlawn Cemetery, Elmira, New York."

The birth years of F. Monroe Clair and Francis Monroe Clair being the same year and Della coming from PA makes this a great possibility, but not a definite match.I am looking for something more concrete if possible.
Other similarities are:
-Nettie living in Horseheads, NY which is right next to Big Flats.
-Nettie being buried in Elmira which is the next town next to Horseheads.

Mercy R. Clair's middle name could have been Rose-Anne because one of her granddaughters was supposed to be named after her but only received the name Rose-Anne because the doctor refused to put down the name Mercy on the Birth Certificate (according to the granddaughter).

Della was reportedly married before she married Ithiel McNeil but I have no details on that.

If any one has concrete information or more information on this family I would love to hear about it.

Thank you.

Steve