Maggie Cousins, widow, born c.1882, in Ireland, shows in 1910 Census at Sacramento Ward 1, Sacramento, California. In 1908 she was living at 306 ½ “K” Street.
I suspect her maiden name may have been White, from Wexford. So the Cousins husband may have been from Wexford too. She may have remarried and had children with a second husband.
I suspect her brother John (b.1878 who lived in Montana before 1908) may have settled in Sacramento, so may have descendants there.
Perhaps this rings a bell with someone?