If they do follow a naming pattern you would expect to have family from T W Downes to be included. Which of the childrens' names come from his family?
This was Thomas William's second marriage. He had another 10 children by his first wife. Of them 5 also had 2 names.
There is only one name on his side that I am sure about.
Thomas William (he had another son John Thomas William!)
His father was John and mother Elizabeth. Both names used in the first family, as are the names off his brothers and sisters. Mary is used again in the second family, but Mary... not a very helpful name.
So the answer is no. there is no obvious pattern in the names.
