You could be right, but how to prove it.
The 1901 census may reveal all..... maybe
best way is using marriage certs for both ... best match for Robert's marriage from the BMD index below
Name: Robert Creese Memory
Registration District: Dublin South
Event Type: Marriage
Quarter and Year: Jan - Mar 1887
Volume Number: 2 / Page Number: 601
He, his wife and all children list Ringsend as place of birth.
Shane