is this website accurate

i found this website focusing on certain lineages from jerez.
http://jerezzacatecas-salvador.blogspot.com/

i'm not sure how accurate it is though. some parts some accurate like who quitera gamboa's(spouse of pedro chavez) parents are , but this thing claims that miguel caldera had four children when his will said he only had one. it also claims that he and his sister maria are full siblings when there isn't enough evidence to make that claim. mora than likely they are half-sibling since her maiden name was cid.