They never appear together on the census, but that is only one day every ten years. There is no way of knowing what was happening on all the other days. Charles job as a canal boatman would obviously take him away from home a lot of the time and it may be that he was simply away working on each census night. We certainly know that he was away on his boat in 1901, but the fact he had his daughter with him suggests that he was part of the family group.