The register is written in different hands over varying time periods. Robert Thompson had two earlier marriages that are not represented on this register. His eldest daughter by his third and last wife Emma Russell was my great-great-grandmother Alice Goodrich Russell Thompson, who was named for her father's first wife Alice Goodrich and her own mother. Several of the dates appear to be largely written at the same time, these being Robert and Emma's births (1795 and 1808), their marriage (1842), the births of their six children (between 1844 and 1851), and Robert's death (1854). However other dates (from 1872 to 1932), are from different inks and sometimes a different handwriting. Some insight into family communications can also be derived from analyzing when different dates were written.
Part of the framing of this register includes the original 1875 Illinois marriage license return for Alice and Josiah, as well as an 1854 Maine newspaper clipping of Robert Thompson's death. As the handwriting and pen of all of the events up to Robert's death in 1854 are clearly the same, my educated guess is that Emma (Russell) Thompson wrote all of these events onto the register. All later dates are written by other people.
It's possible Alice was given this family register by her mother before she left New England for Illinois. The marriage dates of 1875 and 1880 for Alice and Olive appear to be in the same handwriting and ink, which lead me to believe they were written by Alice when living in Neponset. The marriage date of the youngest sibling – George, who was married in Maine in 1876 – also appears in the same penmanship, but in a slightly different ink. This suggests some level of communication between Alice and her family back east.
The 1872 death date of Alice's mother is also written in, but may also be another handwriting, as are the deaths of Alice in 1921 and Olive in 1932. Alice's four younger brothers were all written in pencil, which has faded over the years due to light exposure. But the third through fifth brothers all died in Maine between 1865 and 1869 (all unmarried), while the youngest brother died in Oklahoma City in 1924.
As these dates between 1865 and 1924 were all penciled in the same penmanship, I would think they were written in sometime after the last death in 1924, by someone intent on “completing” the register – but not, perhaps, confident enough to use a pen! Fortunately, I can verify all the faded dates from other sources. As Alice would have certainly known of her younger brothers’ deaths in the 1860s, for whatever reason she never filled those in.
How Alice communicated with her family back east is unknown to me, but this beloved family treasure, one that hung in her grandson's farmhouse for decades and now rests with me (traveling from New England to the Midwest and back again), provides a tiny clue.