Update.
I have found all of my Thomas family with their spouses in Navadaville, Colorado....have posted the surnames in case you are looking for these families.
My family Nicholas Thomas c1816-1863 married to Elizabeth Curtis c1816.
Children: emigrated c1874
Elizabeth Ann Thomas b1840 married John Semmens F:John Semmens
Charles Curtis Thomas b1845 married Annie Nicholas F: John
Margaret Thomas b1854 married Nicholas Oats F:Moses
All from Trewellard, Carnyorth Pendeen area.
Nannie Thomas b1857 married Samuel Noble in Michigan, all I know is that he was English.
Update
Nannie Thomas b1857, second marriage in Colorado to: Richard Thomas Trezise born England 1862 died Colorado 1914...child from his first marriage Richard Trezise b1887
Ambers