I am looking for info on William Martin b. 1810-1811 in Ireland. Came to US in 1845. He was accompanied by son Matthew Martin b. 2/1840. I do not know where they lived in Ireland. I cannot find the ship they came over on. William is my 3rd great grandfather. They settled in the Camden/Gloucester County area, New Jersey. The earliest I have found them is 1862 in Camden/Gloucester County. Any help where to look next would be greatly appreciated.