“Read Holy Blood, Holy Grail...”
Wacked out conspiracy theory—promotes the notion that Jesus and Mary Magdalene were married and had children, because “clues” were supposedly planted in certain renaissance-era paintings, plus a whole lot of other “clues” and secret societies and elaborate coverup schemes originating purely in the authors’ imaginations.
There is NO evidence that Jesus had a “family” consisting of wife or subsequent heirs.
Dan Brown based his DaVinci Code on Holy Blood, Holy Grail. Why would you recommend BS like this as if it were valid?
There is evidence that Jesus’ mother spent her remaining years in the city of Ephesus, where she was cared for by the apostle John. Jesus instructed John to do so. IIRC there is a house in Ephesus that according to legend is where Mary lived.
Whether or not Jesus mayhave had brothers —IOW whether Mary may have had biological children or step-children with Joseph—is a source of debate. Good luck with that one.
There are numerous source materials tracing the travels of the various apostles. Peter was crucified in Rome. His bones are beneath St. Peter’s Basilica. Paul was beheaded in Rome. Thomas traveled to India. Etc.