El Morisco (a)

Today I was researching my Lizarraga line, and I discovered an interesting entry for my paternal 4th Great Grandfather, Salvador de Lizarraga, married to Maria Rosa de Herrera Anzaldo, on 20 Oct 1748

Strategy

Group Help on Methodology Required,
I need to know the correct methodology because for the first time I'm researching surnames that are plentiful:  Sepulveda and Morales.  And to complicate thing