Yes, I spotted that one as well Mabel, it certainly looks like him IF the birth is him. The actual image says Alexander is 1 yr 4 months on the census. I see she says she has been married 2 years, so that would be about 1909 - could just be a cover up? The actual image says Alexander is 1 yr 4 months on the census. Could be the reason he was fostered.
That Irish census is free - just follow the link.