Penrhiw is a locality in the township of Haminiog which lies in the parish of Llanrhystud. For more information see Llanrhystud, Cardiganshire at genuki.org.uk
Census records from 1841 to 1911 are available online. For access, see England Census Records and Indexes Online. Census records from 1841 to 1891 are also available on film through a Family History Center or at the Family History Library.