« Reply #1 on: Saturday 24 August 13 22:22 BST (UK) »
Yes, all the time. The only way to try and be sure is to check with original records and then check again. One of my gt-grandmother's had the wrong father on her marriage certificate and I assumed it was accurate, trying to ignore the fact I couldn't find a birth certificate for her. Eventually I solved it (actually someone on here did) and I found her real father and her birth certificate. I'd done a lot of research into her adoptive father's family too which, although not wasted, did take up a lot of time.
I think it's best to keep an open mind and be prepared for some trial and error. It should be fun after all!

London (Stepney, Hackney, Lambeth): Hayden, Jones, De Brader, Detenon
France & The Netherlands (Amsterdam): Detenon, De Brader, Slingerland, Goetje, Fokke
Ireland: Hayden, Mealey/Mealy
India: Padam
Gloucestershire: Cripps, Morse, Heaven, Timbrell, Draper, Olliffe, Adeane, Young, Goodrich
Hampshire: Voller
Sussex: Wenham, Rogers
Derbyshire: Lacey, Thompson