Hi Wendy,
I just picked up your link, and it seems your family is also mine. Linked via Charlotte Howman(my great great grandmother), sister of Lydia Howman, who upped and left Norfolk with Robert and went to Hull. I may have the answer to the confusion of the two sons' parentage. According to my information, they are listed in a census as being Robert's children, and Lydia is listed as the mother, at the same time as being listed as Robert's daughter. This is either a mistake on the part of the census taker, or there appears to have been some incest. That's the only two conclusions i can draw from the info. If you want to know more, please let me know. I've traced the Howman's back to Norfolk as far back as around 1270, and I think the name was originally Humanz, the furthest back i can go is a Johann Diederich Humanz, and it seems the name was adapted to Howman later. So it's a fair guess he was from Eastern Europe or possibly Scandanavia. There's has always been a bit of a myth in my family about a German Jewish link somewhere but I have no proof if this is just myth so far. Charlotte Howman married a Norton, from Lincoln and they moved to Sheffield, which is where my family has been since. Quite how or why she came to leave her family in Norfolk and move to Lincoln is not clear, they were married in Lincoln but moved shortly after to Sheffield. It was around the time Lydia moved to Hull with Robert. I have a photograph of Charlotte and my great, great Grandfather if you are interested. I also have a burial certificate/receipt for an infant of the family who died aged 9months in 1903, their child, who's name is 'Howman' Norton. he was buried in a reopened grave so I assume there are several more int he same plot but haven't been able to locate the exact spot in the cemetary so far, but it's still there, opposite Don Valley Stadium in Sheffield. It seems to have been the next generation My great Grandfather who dropped the Howman name. Charlotte had around 14 children, many of them died in infancy but around 8 survived to adulthood. Not sure if the Howman's of Norfolk were particularly 'short' but my great grandfather was only 5 foot 2, and his brother around the same. i hope at least some of this info is useful and would be interested in any information you have to compare and confirm that mine is correct.