William Bligh had six daughter. Elizabeth Bligh was born on 24
March 1786 at London, England. She was the daughter of Vice-Admiral
William Bligh and Elizabeth Betham. She was baptised on 5 May 1786
at St. George's in the East, London. She married Richard Bligh (not
a close relation) in December 1817. Anna Bligh's descent is from
this couple.
She is a direct descendant of William Bligh, in the paternal
line to Elizabeth Bligh, the Vice-Admiral's daughter. She inherits
the Bligh surname from Richard Bligh.