The 1870 census for Dona Ana County, pg. 168, dwelling 146, family 145
Barncastle, John, age 34, male, white, occup: Dry Goods Merchant
" , Josefa, 33, F, W
" , Emily, 2 F W
" , John 2/12, M W (born in April)
Thompson, Trinidad, 13
" , Eleanor, 10
Carraico?, Pularcion?, 19, Dom. Svt.
Gomez, Eugenia, 33, Dom. Svt.
The 1870 census, unfortunately, doesn't state the family relationships, so
who knows who these two Thompson girls are.
Also, with regard to whether Josefa Melendrez Barncastle was the daughter of
Pablo Melendrez, this excerpt is taken from Mary Jane Garcia's book
(regarding the recognition of the Dona Ana Bend Colony):
"Three interested parties who owned lands in the Grant filed suit in the
Court of Private Land Claims against the United States on July 26, 1892 for
confirmation of the Dona An Bend Colony Grant......The wife of John D.
Barncastle, Josefa M. Barncastle, who was daughter and heir to Pablo
Melendrez, claimed all of her father's lands located in the Grant."
Ms. Garcia also refers the reader to pg. 71 of "Spanish and Mexican Land
Grants in the Chihuahuan Acquisition" by J. J. Bowden, publ. in 1971 by
Texas Western Press, the University of Texas at El Paso.
You might also check out this link for the 1890 Veterans Schedule which has
an entry for John Barncastle:http://nmgs.org/art1890cen.htm
I hope this information is helpful to you in your research.