St Mary (England Hertfordshire Sawbridgeworth), "Register of Baptisms (1813-1842)", page 48, Baptism of Frederick Henry Brown, 11 July 1819, digital images; Findmypast (http://: accessed 31 December 2018)

Text from source:

Baptisms solemnised in the Parish of - in the County of - in the year 1819
No. When Baptised Child's Christian Name Parents Names Abode Quality Trade or Profession
Christian Surname
380 11 Jul 1819 Frederick Henry Samuel and Mary Ann Brown Here Gamekeeper