Thank all for your replies! I thought I would add a little more information that I have gathered. My initial information was gathered from the sources commented on here. But the newspaper article was new to me so thank you for posting it.
Pierce Galwey was married to Sarah Johnson. (I cannot find a marriage date)
They have at least 4 kids.
Mary Ann Galwey 1811-1878
Edward Galwey 1813-
Susan Galewy 1819-1871
Richard George Galwey 1821-1858
I do not have any death record for Edward but for Richard I do. This leads me to believe that he had at least another son maybe two as the newspaper article a well as the says his two oldest sons died. Richards death date does not match. If the birth year is correct for Richard he would have been only 9 where the article stated they younger was 12.
Edward, assuming the birth year is correct, would have been 17 matching the newpaper article. He possibly is one of the boys that drowned with their Dad, Pierce.
Thank you all so much for your input. This is more information than what I had and I am deeply grateful. If anyone happens to have any more, I would love to hear it.