Twins was my first thought but triplets?
United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:CS8H-LPZ : accessed 30 January 2017), Rudy O Pyron in household of Clasure M Kidd, Precinct 5, Jones, Texas, United States; citing enumeration district (ED) ED 15, sheet 11B, line 59, family 216, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 2365; FHL microfilm 2,342,
Clasure M Kidd Head M 42 Texas
Mary E Pyron Sister F 55 Texas
Obid B Pyron Nephew M 17 Texas
Ruby O Pyron Nephew M 16 Texas
Rudy O Pyron Nephew M 16 Texas
Ruthy O Pyron Niece F 16 Texas