I am not related, but do have access to some marriage and baptismal records. Here are the marriage records for Mercure from:
EL RITO MARRIAGES
5 Apr 1875 x
Maria Benigna Sanchez, widow of Enrique Mercure, with Manuel Valencia single, legitimate son of Juan de Dios Valencia and of Maria Ignacia Lovato. Witnesses, Mateo Vigil and his wife. (Note: This record reversed—the bride entered first—very unusual).
9 Jan 1879 (Tierra Amarilla)
Guadalupe Duran single, legitimate son of Damian Duran and of (faded out) with Teodora Trugillo single, legitimate daughter of Jose Maria Trugillo and of Juana Montolla. Witnesses, Manuel Valencia, Francisco (scribbled), Manuel Sanchez and Luiza Mercure.
24 Jan 1881 (Tierra Amarilla)x
Carlos Le Rouge single, legitimate son of Carlos Le Rouge and of Rosa Quintana with Adelaida Mercure single, legitimate daughter of Enrique Mercure and of Benina Sanchez. Witnesses and Padrinos, Wales Gold, Luiza Mercure, and Pablo Salazar.
5 Nov 1921 (El Rito)
Salomon LeRouge from Tasiecitas, (Lumberton parish), son of Carlos M. LeRouge and Adelaida Mercux, married Carolina Martinez from La Madera, daughter of Juan Torres and Josefina Martinez, adopted daughter of Juan Agustin Martinez and Delfina Martinez.
In Los Ojos on the 5th of November of 1887, I married and veiled Leandro Mercure from Los Ojos, single, legitimate son of Enrique Mercure, deceased, and of Maria Benina Sanchez with Juana Garcia from Las Nutrias, legitimate daughter of Juan Garcia and of Teodora de Luna. Paid $9.00. Padrinos, Antonio Cordoba and Francisca Garcia.
Today the 29th of June of 1891, I married and veiled Placido Mercure from Parkview, single, iligitimate son of Margarita Mercure with Simona Martinez also from Parkview, single, legitimate daughter of Jesus Martinez and of Juana Esquivel. Witnesses, Sabino Olivas and Aurelia Cisneros.
On the 7th of September of 1899, I married and veiled Jose Dolores Lopez widow in 1st marriage of Casimira Abeita, legitimate son of Antonio Jose Lopez, deceased, and of Maria Andrea Romero, resident of Park View, with Margarita Mercure single, adoptive of Henrique Mercure, deceased, and of of Benigna Sanchez, deceased, residents of Park View. Witnesses, Pablo Valdez and Suzana Martinez.
On the 5th of November of 1900, I married and veiled Jose Angel Gallegos single, legitimate daughter of Torribio Gallegos and of Antonia Abeita, residents of Edith, with Celina Leronge single, legitimate daughter of Carlos Leronge and of Adelaida Mercure, residents of La Magina de los Brazos. Witnesses, Facundo Baca and Isabel Garcia. Enrique Mercure and Carmel Gallegos.
On the 17th of June of 1902, I married and veiled Placido Mercure widow in 1st marriage of simona Martinez, natural son of Margarita Mercure, residents of Park View, with Delfina Carrillo single, legitimate daughtger of Jose Rafael Carrillo, deceased, and of Mariana Elena Madrid, resident of Park View. Witnesses, Juan Carrillo and Benigna De Herrera.
No. 1. January 1909. Jose Eduardo Lucero from Lumberton, NM, baptized in Lumberton on August 12, 1886, son of Jose P. Lucero and of Marina C. de Lucero with Eugenia Mercure from Lumberton, baptized in Park View, NM on September 16, 1888, daughter of J. Leandro Mercure and Juana G. de Mercure. Witnesses, S(smeared) Sanchez and his wife. Jose Gallegos and his wife.
There may be others - please contact me at firstname.lastname@example.org