1891 census - Living at 10 Club Street, all born Bangor
John Pritchard, 56, Sailor
Ellen, wife, 43, b. Rhiwlas, Caerns (there is a Rhiwlas on outskirts of Bangor)
John Pritchard, son, 26, Sailor
Ellen Pritchard, dau, 20
William Pritchard, son, 11
Richard Pritchard, son, 9
There was a ship called "Swallow" registered Beaumaris in 1881 but none of the crew were Pritchard