Horoho has variants in Ireland: Horohoe, Haraghy, Herraghy, plus about 40 more.
The only Bernard Horoho(e) B rcd I found was in 1869. This is almost 20 years after the famine exodus. Father's forename was John.
For this surname and variants, there are 361 B rcds and 143 M rcds mostly in Co. Roscommon and surrounding counties. With such small numbers of records, they were likely all related at some distant point.