I have been able to find very little information regarding William Calvert.
The one I have was born 1846 in England. He was married to Mary Hodgson who
may have been previously married, born 1845 in Rhode Island. Their children
were Ella L. Frazier (born 1866, NH), Ellen Calvert (born 9Feb1872 in Fall
River, MA [from birth record]), Mary E. Calvert (my great grandmother born
Sept 1874 presumably in Fall River), and Sarah E. Calvert (born 1877 also
born in Mass, presumably Fall River). Most of this information comes from
1880 census records. I also have Mary Calvert's marriage record (to Alexis
Saucier) and Ellen Calvert's birth record. Thus far, I have not been able to
find any other records though I hope to get back there to the Rhode Island
archives (many Fall River residents went to Providence for health care at
that time) I also want to check the cemetaries for possible leads. I don't
know if any of this helps you or connects to your information but if it does,
please let me know.
Frances Taylor