Samuel Middagh (1859) family of Petaluma, Sonoma Co.L

Looking for three family members of the Samuel "Sam" Middagh family
in Petaluma at least until 1920 census.

Samuel Middagh 1859 Mountain, Dundas, Ontario, Canada
Last seen on 1920 census in Petaluma


wife Laura A. Doss (1864) Calif. prob Petaluma
Last seen on 1920 census in Petaluma
Father: John Roland Doss
Mother: Amanda Stephenson

Missing daughter: Myrtle A. Middagh b abt Jun 18890 Sonoma Co. only seen on 1900 census
Did she die, marry????