Interesting reading the above.
Per 1900 US Census for Joseph & Elizabeth children:
Ruby born in IA in 1881
Olive born in CA in 1884
Nellie born in CA in 1887
Sadie born in CA in 1890
Per 1900 US Census for Lavinia & George Richards (Lavinias 2nd husband) for children:
States they have had 3 kids-2 living:
Jessie born in CA in June 1884
Olive born in CA in 1891
(Samuel Jr was the son of Samuel Sr., Lavinias 1st husband)
It appears that both Lavinia and Joseph had a daughter named Olive and that some records may be confused since they were born so close.
Jessie is the daughter of Lavinia and George (as Samuel died 2 yrs prior to her birth)