Cayetano Romo de Vivar and Maria Josefa VAllejo

Cayetano Romo de Vivar and Maria Josefa Vallejo were married (date unknown) possibly in Jalostotitlan, and at least five children baptized there:
Mariana Josefa Bernardina, c. 27 May 1786
Maria Josefa, c. 7 Jan 1795
Antonio Mariano Martin, c. 24 Feb 1785
Jose Alex, c. 26 Jul 1789
Maria Antonia Dorotea, c. 9 Feb 1793

Does anyone know who the parents of Cayetano and Maria Josefa were?

Here is a Cayetano Romo that fits the time period and in Jalostotitlán, Jalisco.

Name Fransisco Antonio Calletano Romo Pena
Gender Male
Christening Date 29 Sep 1755
Christening Place NUESTRA SENORA DE LA ASUNCION,JALOSTOTITLAN,JALISCO,MEXICO
Father's Name Xptobal Romo
Mother's Name Maria Nicolaza De La Pena
Citing this Record
"México bautismos, 1560-1950," database, FamilySearch(https://familysearch.org/ark:/61903/1:1:NK3Q-9J1 : 10 February 2018), Fransisco Antonio Calletano Romo Pena, 29 Sep 1755; citing NUESTRA SENORA DE LA ASUNCION,JALOSTOTITLAN,JALISCO,MEXICO, reference ; FHL microfilm 279,257.

Rick A. Ricci

Danny, thank you.

I have looked extensively at the Vallejo family of Jalostotitlan, and cannot unambigously place Maria Josefa.

There are, perhaps, three families. One is consistently "Espanol," the others are indio or mestizo. Maria Josefa is espanola, so she cannot be ot her the other two, but there are a number of espanol Vallejo men who could be her father, but identifying the right one eludes me.
I have looked through the indexes of the Guadalajara dispensas, and there are very few Vallejo's there.