During 20 years of searching I am as sure as can be that ANY PERSON born, world-wide, 
of a DULIGAL is a relative of mine, and that any person related to Charles Duligal 
1831-1867/Ann Jane Adelaide Wilson 1831-1872 is a direct relative to me, Charles had 
2 brothers, Richard and Henry, their parents were, Charles Duligal/Elizabeth Wright.
The surname origin I have not been able to trace and there are a number of variation 
to it's spelling ie, Dulligal, Dulligall, Duligall, Duligle, Daligal, Daligol 
Delagel, DuLiagle, to list but a few.
With the help of many contacts and offical documents, my research has taken me back to
the following ancestors of my Great Grandparents,
Charles DULIGAL  1796.   Elizabeth WRIGHT  (First sighted, England London)
John    NASON 1768.      Sara DUNNAGE    (       "            "    Essex) 
Daniel BELTON 1666.      Mary            (       "            "    Surrey)   
Richard BLAND 1766.      Ann SANDERSON   (       "            "    Northamptonshire) 
Robert MURRELL abt.1780. Susan BEAN      (       "            "    Norfolk)
William BRAND abt.1770.  Ruth HAWKES     (       "            "    Essex)
John PRIOR  abt. 1680.   Mary WERE       (       "            "    Sussex) 
John ANTHONY 1732.       Ann PAYNE       (       "            "    Hampshire)