He was my great great grandfather. In addition to the children you list, there was Charles Henry (my line), and also George, Lincoln and Lois.
I've found information in the censuses that Thomas Wallace's parents were in fact Thomas and Sarah. Thomas the elder was born in 1797 in Deal, Kent, England, and died in 1868 in Barnsley, Yorkshire. (My family had also said Manchester, not far away). Censuses from 1841-61 show his occupation as linen and cotton dyer. Sarah was born about 1803 in Chatham, Kent and died in 1877 in Barnsley. Their children, all born in Barnsley, were Thomas, Mary, Stephen, Sarah, Joseph, Elizabeth, John. Thomas was the only one to emigrate, in 1848.
Our family's spelling has been pretty consistently Warbis since the early 1800's. I've done some searching on the siblings and many of the people I find with this spelling in the 19th century are part of this family. So far I haven't been able to trace back further in time.
I'm happy to share further info.