My grandfather, Barney Dell Cassida is a descendant of John Cassidy and William Cassidy. Spellings include Cassiday, Cassidy, Cassida. My grandfather was born in Galveston TX however he lived in North Florida and Alabama. I don't have much information about John his father except that he married twice. Cora Lee Garrett was his wife. Think his 2nd and not my real gr grandmother. John was born around 1880 and I guess William around 1860. William married Sue Drake (Margaret Elizabeth Drake) could have also been nicknamed Bessie. Whew! Levi sounds familiar. Look up on ancestry.com for Barney Dell Cassida and you can find some info. Wish it were more. If you find anything about John or William, please let us know.