Jim, I don't know HOW it got in there spelled that way but its is. There is a LDS Library where I live but its hard for me to get there. I figure someone must have read the name wrong at some point.
I don't have anything on the Cogans, but I don't have anything on the Creedon in my family either. I'm sort of working blind here. I got Margaret Creedon's mane from the SSDI printout on my grandfather, Timothy James Tracy, Jr. as his mothers name.