Complex sentence: His aunt, Mabel Álvarez, was a California artist specializing in oil painting.Álvarez married Geraldine Smithwick in 1936 and had two children, Walter and Jean.
Split into simpler sentences: His aunt, Mabel Alvarez, was a California artist specializing in oil painting. Alvarez married Geraldine Smithwick in 1936 and had two children, Walter and Jean.