Thanks Paul!
Only thing is I disagree about deleting the birth year altogether. I'd rather have a guess than nothing.
I spend a lot of time looking for matches, and I add estimated birth dates when none are given to help with the process (e.g., if I'm searching for Kempton Ward born 1580, I'd know that Ward-2594 born about 1641 wasn't a match, and if I saw another Kempton Ward born about the same time, I'd compare them and maybe find a match I wasn't looking for).
Am I doing wrong by adding guesses?
Thanks again, Liz