This William Trowbridge was born in England 1874 according to the 1880 Wood County Perrysburg, Ohio census.You must have the 1880 census as this is the one that show family with their first 3 children born, Anna, Flora and Ida.
This Fulton County Ohio Trowbridge lines came from Massachusetts to Connecticut and then Ohio and go back to before 1700 in America.
1880 United States Federal Census about Wm. Trowbridge Name: Wm. Trowbridge Home in 1880: Perrysburg, Wood, Ohio Age: 33 Estimated Birth Year: abt 1847 Birthplace: England Relation to Head of Household: Self (Head) Spouse's Name: Sarah I. Father's birthplace: England Mother's birthplace: England Neighbors: View others on page Occupation: Farmer Marital Status: Married Race: White Gender: Male
Household Members: Name Age Wm. Trowbridge 33 Sarah I. Trowbridge 25 Anna M. Trowbridge 6 Flora A. Trowbridge 3 Ida E. Trowbridge 1
And the 1900 census shows 2 younger children, George and Cyrus with their widowed mother Sarah.
1900 United States Federal Census about Sariah Trowbridge Name: Sariah Trowbridge
Home in 1900: Perrysburg, Wood, Ohio Age: 45 Birth Date: Dec 1854 Birthplace: Ohio Race: White Ethnicity: American Relationship to head-of-house: Head Father's Birthplace: England Mother's Birthplace: England Mother: number of living children: 6 Mother: How many children: 6 Marital Status: Widowed Residence : Perrysburg Township (North Part Excl. Perrysburg Vill.), Wood, Ohio
Household Members: Name Age Sariah Trowbridge 45 George Trowbridge 16 Cyrus Trowbridge 14