Oh I know! Once I finally figured out who my grx3 grfather was in one line (after finding I had a grx2 grfather, and getting very specific info about his father from his marriage certificate), his life was still a blank between baptism in the 1790s in Wiltshire and old age and death in the workhouse in Wiltshire, except that his son reported consistently that he was born in Bristol himself. Well, somebody at another site, and I have no idea why, looked for him in Scotland, and damned if he hadn't remarried there in 1839 (I have since found a record of his first marriage and wife's death in Bristol). And then, after literally years of looking for him in the 1841
English census, I turned to Scotland and there he was, large as life. His parental info wasn't actually on the Scottish parish record of his marriage ... but he had decided to go native and insert his mother's surname into his name, so there was no doubt. And on his second wife's death, she was identified as wife of him, with his occupation, so again, solid evidence.
For all that the English set about turning the world into one big bureaucracy, they did a damned bad job on that civil registration thing.
Imagine, if somebody back in 1837 (or before, in parish records) had thought women, not just fathers, actually mattered, how much easier our lives would be now! I might even know who the family of my grx3
grandmother in that line was.