The couple at that familysearch address that Dennis located are credited with 7 children, something to note on their profiles -- all born c1902 to c1921. -- that would be Arthur G, Helen, John F., David, Robert H, Randal F, and Mike
The marriage record -- "Indiana Marriages, 1811-2007," database with images, FamilySearch(https://familysearch.org/ark:/61903/1:1:VH42-KNQ : 10 December 2017), Arthur H Mcfarland and MM9.1.1/VH42-KNQ:, 04 Oct 1900; citing Gibson, Indiana, United States, Marriage Registration, Indiana Commission on Public Records, Indianapolis; FHL microfilm 004646576.
There are also cited the 1900 & 1910 Census & SSDI for Henrietta McFarland, nee Smith, 1930 Census, & 1940
And if you explore the site you will probably discover more information about Arthur and about their 7 children