This will require a lot more searching on your part. You might want to try plugging in sibling names in the free search tool at https://familysearch.org/ to see if there is any more. Bloomer Boyd can be found from 1900 to 1940 in census data with his wife Fanny. They were married abt 1896 so Maggie Dale must have died prior to that date and after 1891 when Clark was born.
'Bloamer' Boyd is living with the Rice family in 1880 - listed as 'son' to Sam Rice and Ellen Rice. All the other children are 'Rice' - indicating that Ellen might have remarried to Mr. Rice after something happened to Mr. Boyd. In 1870, Ellen Boyd is living in MO with 4 children, no clarification as to widow or married. One of her sons is 'Blew Boyd' born the correct year as the Bloomer Boyd who married Fanny. Maybe her husband Mr. Boyd died during the Civil War. These pieces may or may not be part of your puzzle. Good Luck Example below:
U S Census, 1900 ED 112 White Oak township New Hampton village, Harrison, MO
https://familysearch.org/pal:/MM9.1.1/M3CP-655
head Bloomer R Boyd M 38 Nov 1862 MO/IL/IL married 6 years abt 1894
wife Fannie D Boyd F 27 MO
dau Mary E Boyd F 5 MO
U S Census, 1880 Athens, Gentry, MO
https://familysearch.org/pal:/MM9.1.1/M6XS-7JR
self Samuel Rice M 52 KY
wife Ellen M. Rice F 43 IL
Dau Laura Rice F 22 MO
Dau Patuna Rice F 17 MO
dau Rogeina Rice F 16 MO
son George Rice M 13 MO
son Bloamer Boyd M 18 MO
dau Nancy Rice F 11 MO
dau Julia B. Rice F 9 MO
dau Maggie Rice F 7 MO
dau Lucy M. Rice F 4 MO
son Wiley Daniel Rice M 0 MO
US Census, 1870 Lathrop, Clinton, MO
https://familysearch.org/pal:/MM9.1.1/M4DY-FFN
Elen M Boyd F 34y IL
Julia O Boyd F 12y IL
Hannah Boyd F 10y IL
Blew Boyd M 8y MOi
Lamoin Boyd M 1y MO
