Hello Andy. I am sorry but I do not have any info regarding William's siblings. The only thing I do have is that his father was John Kelly & Mother was Jane Braid. My great-grandmother, Louisa, was blind I have been told. I know that grandpa Kelly had 9 siblings besides himself. My grandfather was born Nov 28/1876 and married a girl from Liverpool on April 5, 1905 sailing for Canada the next day. Grandpa did have a sister, Lucy May, who also came to Canada and was married here. Other than that info, I have nothing else to go on. Wish I could be more help.
Linda