I've found very few ages increasing by 10 years between the two census for my family, i've one relative who is 49 in 1901 and 71 in 1911, is this the largest increase in age between census?? all down to the Pensions Act, i've no doubt.
The census has helped identify a few more to add for the family tree but one of my brickwalls James McGuire still remains a mystery, I had hoped he'd be living at home with his parents in Edenderry (allegedly) but still no joy.
Regards
Darren