Blaenannerch is located in Aber-porth parish. For further information, see Aber-porth, 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. The first film number is 464305.