Here is some marriage, baptismal and census information on your families.
NM Marriages San Miguel del Bado 12 Nov 1829-10 Nov 1878 pub. by NM Genealogical Society
page 57:
21 Feb 1847 - Jose Miguel Griego, single, of this jurisdiction, s/ Miguel Griego & Guadalupe Quintana, m. Maria de los Reyes Sandoval, single, of this jurisidiction, dau./ Antonio Sandoval & Ju(a)na Esquivel. Wit: Jose Antonio Casaus, Marcos Sandoval, Miguel Blea and others.
page 86:
19 Oct 1850 - Juan Nepomoseno Sandoval, single, of this jurisdiction, 19, adopted s/ Antonio Sandoval & Josefa Esquibel, m. Maria Diluvina Ruibal, single, of this jurisdiciton, 14, d/ Julian Ruibal & Paula Truxillo, Wit: Asencion Archuleta, Manuel Truxillo & others.
1850 NM San Miguel County census as transcribed by NM Gen Soc.
page 180 -- Sheet 79 (Nov 10,) Tuckelata {Tecolote}
Griellgo, Jose Miguel, 30mNM
Maria La Reyes, 28fNM
Sandoval, Antonio, 40mNM
Juana, 38fNM
Barbarita, 10fNM
Jose Cruz, 7mNM
Other Sandoval families on same page include:
Sandoval, Juan, 25mNM
Josepita, 16fNM
Rosita, 3fNM
Doloritas, 8/12fNM
Bacca, Augustin, 12nNM
Sandoval, Jose Ma, 40mNM
Tomasa, 30fNM
Jose Manuel, 3mNM
Sandoval, Jose Maria, 27mNM
Maria Consision, 28fNM
Maria Rosaria, 3fNM
Jose Genino, 2mNM
From San Miguel del Bado Baptisms, v. I 1829-1839
Page 201:
Romero, Maria dela Crus
bap 4 May 1843, born 5 Apr; d/ Pablo Romero & Micaela Garcia; grandparents not given; godparents/ Juan Ynocencio Sandoval & Maria de los Reyes Sandoval.
Since the Sandoval and Griego families are listed in "Tuckelata" (an Anglicized version of Tecolote) you might want to check the catholic church records of Anton Chico in San Miguel. Those records have been transcribed by Luis Padilla and are available through HGRC
www.hgrc-nm.org or on microfilm through the LDS church Family history centers.
Hope you find this information helpful.
Martha