| O'Brien-Tribble intermarriages | |||||||||||||||||
| Generation | The difference between line breeding and inbreeding is in the result! | ||||||||||||||||
| 1 | Robert/Mary Tribble | Hiram/Hanna Tribble | Enoch O'Brien | Nancy O'Brien | married T. Shaw | Thomas/Lucinda O'Brien | George/Sarah O'Brien | ||||||||||
| 2 | Nancy | married GW O'Brien | Elizabeth | married S. P O'Brien | G.W. | married N. Tribble | (Elizabeth's aunt by marriage) | Minerva | married John E. | John T. | |||||||
| 2 | Elizabeth | married Theolopolis Shaw | Widow of Hiram | Stephen P. | married E. Tribble | ||||||||||||
| 2 | John E. | married M. O'Brien | Widow of Hiram | ||||||||||||||
| Above are families intermarrying without inbreeding; below was line breeding | |||||||||||||||||
| 2 | John/Minerva Tribble | John/Minerva Tribble | John T/Mary O'Brien | ||||||||||||||
| 3 | Harriet V | married E. O'Brien | Harriet V. | married E. O'Brien | Elmer G. | married H. Tribble | |||||||||||