Henry Doupe

Have you found this?

http://churchrecords.irishgenealogy.ie/churchrecords/search.jsp?namefm=&namel=doupe&location=&dd=&mm=&yy=&submit=Search

and this

http://www.census.nationalarchives.ie/search/results.jsp?census_year=1901&surname=Doupe&firstname=&county=&townland=&ded=&age=&sex=&search=Search&relationToHead=&religion=&education=&occupation=&marriageStatus=&birthplace=&language=&deafdumb=&marriageYears=&childrenBorn=&childrenLiving=

I will need a lot more information to help you some more.

Look forward to hearing from you.

Martine