The  second  son  of  Dr.  G.  Brown  was  a  minister  of  the  Episcopal
Church,  and  was  father  of  Dr.  William  Brown,  of  Fairfax,  Vir-
ginia, a  physician  who  rose  to  professional  eminence,  and  who  also
held  the  position  of  Physician  or  Surgeon-General  in  the  army  of
the  Revolution.
Samuel  Claggett,  the  only  son  of  Mrs.  Horncr  by  her  first  hus-
band, also  belonged  to  the  medical  profession.  He  was  attached
to  the  medical  staff  of  the  army,  in  the  hospital  department,  under
Dr.  James  Tilton,  until  the  achievement  of  independence.
He  subsequently  settled  in  Warrenton,  where  he  pursued  his
profession  with  great  success.
The  father  of  Dr.  Horncr  was  brought  up  to  the  mercantile  pro-
fession in  the  counting-house  of  Mr.  William  Hartshorne,  of  Alex-
andria, father  of  the  late  Dr.  Joseph  Hartshorne,  of  this  city.  He
subsequently  had  charge  of  a  large  mercantile  establishment  on  the
Potomac,  and  finally  settled  in  Warrenton.
His  mother  was  the  daughter  of  Mr.  William  Edwards  and
Elizabeth  Blackwell,  and  through  her,  in  direct  and  collateral
lineage,  Professor  Horner  was  connected  with  a  large  circle  of  rela-
tives, embracing  many  names  of  worth  and  note  in  various  profes-
sions and  conditions  of  life.
The  parents  of  Professor  Horner  were  deeply  imbued  with  the
sentiments  and  precepts  of  religion,  of  the  duties  of  Avhich  they
were  strictly  observant,  commingled  with  no  false  austerities,  which
they  exemplified  in  their  practice,  and  enjoined  on  their  children.
It  is  to  this  source,  in  the  earliest  and  most  impressible  period
of  existence,  that  may  be  traced  the  strong  religious  tendencies  and
feelings  he  exhibited  throughout  life.
The  scholastic  education  of  Professor  Horner  commenced  in
Warrenton  in  his  twelfth  year,  under  the  instruction  of  Mr.  Charles
O'Neill,  a  clergyman  of  the  Episcopal  Church.
