George, do you have any evidence that Peter and Dominick are brothers?
If you think Urbanus is Dominick's father, I can send you a scanned image of his and his wife's photo.
There is an interesting but sad story to Elizabeth Clara Behrs.She was a domestic in the Hall home and married the son, Albert, much to the displeasure of his parents.Their marriage lasted a few years and then they divorced.The mother-in-law had arranged for Albert to marry his cousin, apparently.Elizabeth was pressured into leaving her older child with the Halls.She kept the younger son, who died at age 2. When the older son was in his late teens, Elizabeth's nephew got the mother and son writing to each other, which they did over a period of several years, but they never met in person again.
In 2001, the Hall child's grandson contacted my aunt.The Hall family had Elizabeth and her daughter's letters to Willie all those years (about 80).He photocopied them and sent them to my aunt.I am so grateful to him for doing that!