Phone directories list James Richard Gargan as living in Portland from 1904 to 1924, working as a Painter/Decorator but I'm having great difficulty finding him in the 1910 or 1920 census.

I'm trying to confirm his birth year to know if he's the same James Richard Gargan who lived in Dedham, MA in 1900. The family split up just months after the census and I'm hoping to find out what happened to him.

Any help would be greatly appreciated.