Robert Hughes and Harriet Williams

The parents of Ann Maria Hughes were Robert Hughes and Harriet Williams. Robert Hughes was born in Holywell, Flintshire, Wales about 1815 and Harriet Williams was born in Manchester, Lancashire, England around 1814. They were married at Manchester Cathedral on April 18, 1831. Their son Joseph was born in 1837, followed by Elijah in 1838. Our Ann Maria was born in 1847 and another daughter, Mary Jane was born in 1851. I have not been able to find any evidence of the whereabouts of Robert or Harriet after the 1851 census, nor of their eldest son, Joseph. Elijah, Mary Jane, and of course, Ann Maria all married and had several children.