I don't wish to confuse, but many families left Guernsey from 1805 onwards, and some who settled in Cardiff were related to families established there. The book'Printing and printers in Wales and Monmouthshire' by Ifano Jones, William Lewis 1925, mentions the Bird family, descendants of John Bird painter and guilder who came to Glamorgan about 1730, married Margaret Mashman, had a grandson John Bird 1761-1840, alderman, publisher of trade directory, etc. whose relatives continued on with printing and publishing.One of these was George Augustus b. 1803 [in Guernsey acc. to 1881 census.]According to the Cowbridge ironmonger Birds , also related, the first of this line came originally from Coventry where they were involved in the silk industry.The population of Cardiff was quite small in 1800.Should be possible to sort out the Birds.The Cowbridge Birds published a document about their firm on the net in 2005.
I have photographs of William Bird and Sarah Nash which were taken in Cardiff by photographers named Beard and brought to Australia in 1855.I don't know when they died, and so far have no familiarity with census records. Sincerely Ceronn.