I believe I am distantly related to Mary Hyland Dunn. The Ancestry records appear to show she was cousin to Margaret Hyland Bolan, who was my gggrandmother. Margaret was born~1828 in Verona, Oneida, New York to Patrick Hyland and Bridget Harrison. John and Patrick were brothers. Also, Ancestry has her listed as "Mary Ann" in most records I've seen, but I think it's the same person. I've also seen places where her DOB was 1837 or 1838 and 1943 like you. Please contact me when you get a chance. Thanks.
Linda
ps Love the photo!
Linda