My g grand father, John George Caulfield was born c1843 at Sheaun, near Scarriff, Co Clare IRL. His parents were Thomas Caulfield and Mary McNamara. John immigrated to Australia c1870, but had earlier gone to USA and returned to IRL. I am interested to find if he had any siblings, some of whom may have gone to USA. I believe that when Thomas died Mary remarried and had more children. Don't know second husband's name. Any information greatly appreciated.