It does get rather confusing. Minnie (Gruver) Vigil married first Frank Roybal and Frank and Minnie had a daughter Margaret Roybal (I've never seen any adoption records stating that William Sammon (married to Minnie [Gruver]Vigil Sammon) adopted Frank and Minnie's daughter Margaret.

At a later date, Margaret Roybal (Minnie and Frank's daughter) married William Sammon.

Hope Coslett Pees
Seguin, Texas