Question a little too vague.
Mollie C Horton b Nov 1874 Person Co, NC married a Long.
America A Long m Andrew Lafayette Horton 1882. Lee Co, MS.
Beulah Long m Ambrose Andrew Horton of Pulaski Co, AR.
Gayle Long m Sanford Oliver Horton of Hamilton Co, AR.
Faye Horton b 1949 m Gerald V Long of Spartanburg Co, SC.
Hannah Long m John Haughton in 1680s in New London, CT.
Maria Horton m Henry Long in Gloucestershire, Eng in 1550s.
Huey Pierce Long stepson of William Blair Rochelle Horton and Mary Wingate Long, Chesterfield Co, SC abt 1851.
My cousin James Grier Horton is married to Janet Long.
Mary Haughton b abt 1785 m Lemuel Long in Perquimans Co, NC.
John Wharton b1708 m Martha Long Richmond Co, VA.
James Hassell Horton b 1895 m Nannie Long Person Co, NC.
Fred Bascom Horton b 1896 m Rosamond Long Kershaw Co, SC.
Henry Franklin Horton b 1845 m Susan Mary Long Lincoln Co, KY.
Grace Elizabeth Horton b 1912 m William Mack Long Union Co, NC.
Fannie Lenora Horton b 1872 m William Monroe Long Anderson Co, SC
Marriage cert and census records will prove most of these relationships.