I am searching for information on William Williams born about 1790 in wales. He married Jane Humphries Lewis . They had the following children: John Williams born July 1817 and Sarah born August 1820 both in Llansanffraid Glan Conwy. Their next chilren David Lewis was born June 1824, Elizabeth May 1827, William Walter August 1830 and these three were born in Llandrillo yn Rhos, Denbigh. William Walter immigrated to the US and he is my great great grandfather. Any assistance or advice on where to look for information in Wales is very appreciated!