Christian was listed in the 1869 Gazetteer and business directory of Niagara County residing in Royalton. They appeared in the 1870 US Census and 1875 NY State Census in Wolcottsville with just David their youngest son. Ferdinand had married Wilhelmina Kleinhans by then and lived next door on Fisk Rd. 

By 1870 Augustus Jago 28 and William Jago 24 had likely left home but except for a couple of brief newspaper pieces, there's little indication of what they did for the rest of their lives. William seems to have lived nearby in Orangeport/Gasport, but Augustus disappeared. There are no marriages, births, or obituaries for either one. Of course, if they had moved away and even slightly changed their names, finding them would be nearly impossible. Or, being immigrants with just an eighth-grade education, they may not have been comfortable exposing themselves in the newspaper as other people of the day seemed to do. They may have kept to themselves, worked their farms or jobs, and only attended church. It's also possible their brother David's problems (see below) made them reluctant to spread their name around or even stay in the same area.

By the 1880 US Census Christian and Dorothea were living next door to Ferdinand and Wilhelmina, and Frederick and Ernestine Kleinhans on their new farm on Akron Rd. in Royalton. David was not living with them at the time. (see below) In the 1892 NY Census 82 y.o. Dorah Yagow was living by herself near Ferdinand and Wilhelmina on Fisk Rd. again. Her husband Christian must have died sometime after the 1880 US Census. 

note- The third article below mentions David Jago's father died of consumption/tuberculosis after three years of sickness before 1890. There are no gravestones on Find A Grave or newspaper obituaries for any of the Jagos except a two-sentence obit for Ferdinand and a gravestone and 2 obits for Wilhelmina which surely her children were responsible for.

In the 1900 US Census, Dora Jago 89 lived with Ferdinand and Wilhelmina near Foote Rd. in south Wolcottsville. She may have been Ferdinand and Wilhelmina's landlord. Dora died before the next census as did her son Ferdinand in 1907 leaving his wife Wilhelmina with 2 sons, one being 24/25.

Like the Kleinhans name, Christian and Dorothea Jago's names were spelled differently in various censuses, maps, and newspaper pieces. Christian was occasionally listed as Carl (which might have been his nickname). Dorothea's name had been Dora, Dorah, Dorothy, or Doratha. Their last name was spelled Jago, Yago, Jagow, Yagow, Gagow, Yargow, or Gargow at different times.