Hi,

This is the only name that came close to Euphemia Romero in the 1880 census. The birthdate is off by a couple of years.

Census Place: Guadalupe, Bernalillo, New Mexico
Source: FHL Film 1254802 National Archives Film T9-0802 Page 103A

Antonia ROMERO, Self, F, W, W, 27, NM, Keeping House, Father - NM, Mother - NM
Bonifacio ROMERO, Son, M, S, W, 8, NM, At Home, Father - NM, Mother - NM
Eufemia ROMERO, Dau, F, W, S, 7, NM, At Home
Jose ROMERO, Son, M, S, W, 5, NM, At Home
Juana ROMERO, Dau, F, S, W, 1, NM, At Home

Hope this helps you out.

Regards,
Lisa Kennard