I am researching the Avery line that includes Bert William Avery 1932-2002... his father was Cressie Avery b: about 1905 & d: 1953 son of Bert C Avery 1878-1961. Bert William "Bill" Avery was born in South Dakota. Cressie in south dakota and Bert C. avery I have as being born in Iowa. I also have their wives names but am hitting a dad end @ Bert C Avery's parents. I believe his father's name was Pleasant C. Avery. Please email me if anyone can help.