Juan Lopes de Lara y Doña Catalina de Nava su hermana

The above-captioned individuals are padrinos at the baptism of Carlos Ximénes de Castro in Lagos de Moreno in 1648; can anyone shed some documented light on who they are, and what relationship they have to the infant, Carlos, hijo legitimo de Antonio Ximénes de Castro y de Doña María Lópes de Lara?

Saludos,
Lawrence Bouett