Hi Jean,  Find A Grave I think has this family in 1880 and 1900 and I'm not making a connection.
Not finding a "Mat" Listed among them either  

1880 Knobview, Crawford Missouri 
Name:   Hugh Fanning. Age:   21
Birth Year:   abt 1859
Birthplace:   New York
Race:   White
Gender:   Male
Relation to Head of House:   Nephew
Marital Status:   Single
Father's Birthplace:   Ireland
Mother's Birthplace:   Ireland
Household:
John Fanning   59
Catherine Fanning   40
Katie Fanning   22
Allice Fanning   13
Hugh Fanning   17.    (Son b. Missouri)
Agnes Fanning   5
Hugh Fanning   21
Bernard Fanning   16
Annie Fanning   14
Bessie Fanning   11
Mollie Fanning   9
Thomas Fanning   54
Find A Grave
John Fanning
Birth:    Jun. 24, 1821, Ireland
Death:    Jan. 6, 1906
also had a brother named James:
James Fanning was born in County Limerick on March 15, 1837.He married Mary Tackney (she died in 1872).
1880 Crawford Co, MO
John Fanning 59 
Catherine Fanning 40 
Katie Fanning 22 
Allice Fanning 13 
Hugh Fanning 17     Son   B. Missouri
Agnes Fanning 5 
Hugh Fanning 21 (these children below were brother James children) 
Bernard Fanning 16 
Annie Fanning 14 
Bessie Fanning 11 
Mollie Fanning 9 
Thomas Fanning 54, brother
1900 Crawford Co, MO
John Fanning 78 
Mary C Fanning 61 
Catherine C Patton 42 
Susan E Wood 40 
Hugh F Patton 12 
Ailenn M Patton 10 
William G Patton 9 
Bernie J Patton 6 
John F Patton 1 
Cathleen J Wood 11 
Mary A Fanning 25 
Agnes M Fanning 8 
John J Fanning 6 
George Walls 21  
Family links: 
 Spouse:
  Mary Catherine Naylor Fanning (1838 - 1905)* 
 Children:
  Susanna E. Fanning Wood (1860 - 1929)*
  Hugh Fanning (1863 - 1895)*
  Alice E Fanning Jolley (1866 - 1961)* 
*Calculated relationship 
Burial:
Immaculate Conception Catholic Cemetery 
Saint James
Phelps County
Missouri, USA 
Murphy