Hello Scruffy
Here are the Mundells I could find in Dublin.
MUNDELL, Birth
Gender: Male
Birth Date: 21 Jun 1869 Birthplace: 645, 2 North City, Dublin, Ire
Recorded in: Dublin, Ireland
Collection: Civil Registration
Father: James MUNDELL
Mother: Mary LYONS
Source: FHL Film 101186 Dates: 1869 - 1870