There must have been some sort of sickness in the Connell house in 1873. On March 13, 15-month old Frances passed away. Just 6 days later, her 6 week old little brother, William, died. If not a sickness that afflicted the children, perhaps this was a tragedy related to the recent birth - a post partum depression or an inability to provide adequate care for the infants. The next Connell born, Daniel in 1874, would also die young. He was about 14 years old in 1888 when he passed away. All three of these children are buried with their parents in St. Patrick's cemetery in Lodi. (As with the other family members buried at St. Patrick's, all their headstones say O'Connell.)
Although chronologically out of order, there are two other children about whom there is little to say. John is 18 years old and in school when last seen with the family in Lodi in 1880. James is a 12 year old school boy that year, then seen just once more as a 31 year old unemployed salesman living with his mother in Portage in 1900. It is likely that they are in census and other records that I have seen, but their names are so common that I can't tell which ones are our family unless I find a mention of a mother's maiden name. For now, they remain unknown.