On 8 Oct 1873 Mary Louisa married 
William Henry Daniels, son of 
John Perry Daniels (27 Apr 1815-11 Nov 1912) & 
Susan P. Henry (ca 1825-9 Nov 1890), in Scituate, MA.
 Born on 4 Jul 1849 in Somerville, MA. William Henry died in 1937. Buried in First Parish Cemetery, Norwell.
1880 Federal Census.  Boston, Suffolk County, Massachusetts
Roll 560,  page 122A
62 Forrest Street
    William H. Daniels, 29, boot & shoe manfr., b. MA, parents b. MA
    Louisa M. Daniels, 26, wife, keeping house, b. MA, father b. MA, mother b. ME
    Clementine B. Nash, 60, mother-in-law, widowed, b. ME, parents b. ME
1900 Federal Census.  Boston Ward 21, Suffolk County, Massachusetts
Roll 686, page 16A
The Warner, Warner Street
    William Daniels, head, b. Jul 1849, 50, m. 25 years, b. MA, parents b. MA, oil
    Louise N. Daniels, wife, b. Jul 1858, 41, m. 25 years, no children, b. MA, father b. MA, mother b. ME
1920 Federal Census.  Boston Ward 25, Suffolk County, Massachusetts
Roll 721, page 8B
1277 Commonwealth Avenue
    William H. Daniels, head, 70, b. MA, parents b. MA, wholesale merchant, oil
    Louise N. Daniels, wife, 62, b. MA, father b. MA, mother b. ME
1930 Federal Census.  Boston, Suffolk County, Massachusetts
Roll 958, page 8B
15 Glenville Avenue
    William H. Daniels, head, 77, m. age 25, b. MA, parents b. MA, salesman, vegetable oil
    Louise N. Daniels, wife, 66, m. age 22, b. MA, father b. MA, mother b. ME, housewife