Dluthach mac Fithcheallach (died 738) was the 18th King of Uí Maine.
A short section on the clann gives a pedigree ending in one Maelbrighdi mac Innrachtach a great-great grandson of Dluthach.
As the pedigree was not updated beyond Maelbrighdi's generation (c. 800) it would appear that many of Dluthach's descendants died out or faded into obscurity.
A branch of the clan, descended from Domnallan mac Maelbrigdi, were surnamed Ó Domhnalláin.
Based at Ballydonnellan, Loughrea, they became notable bards of Connacht and Munster.