One of the biggest mysteries of my family's genealogy has been finding out exactly when and where (and why) my father's grandfather died. Come to think of it, I wasn't sure exactly when and where he was born. When nearly every other Mahler ancestor died, he or she had a brief obit in the New York Times. Not Great-Grandpa Mahler.
But yesterday I reexamined the 1910 Census very carefully and sure enough, Great-Grandma Mahler was a widow in April, 1910. I checked NYC death records and found an entry for Great-Grandpa in January, 1910. Quick as you can say "ten bucks" I sent to NYC for the record.
Thanks to Ancestry, I already knew that Great-Grandpa had become naturalized in 1900. Out came my checkbook again and I sent for that record, as well. It will take weeks, but I'll know a lot more about my Mahler roots (in Latvia) when these two documents show up in the mailbox.