Today I found two actual reference's that Delia is used as a nickname for Bridget.  I always felt that was a nickname for Bridget, but never knew how to find it out.  Today I was doing my usual search for genealogy and ended up on OliveTree, the newest post was talking about Irish, and one was about a female named Bridget.  Where they listed Delia as a nickname, well this got me curious so I started to do some searching on Google.   Now I can say for a fact that Delia Toomey from the 1920 Census, is actually Bridget Toomey.  Now to see if she used the name anywhere else for records