I have now found this baptism
BIRCH, Robert Birth Date: 3 Dec 1829
Christening Date: 7 Dec 1831 Andover, Hampshire Father: William BIRCH Mother: Ann
and this I think would be his brother James
BURCH, James
Birth Date: 25 Aug 1827
Christening Date: 9 Sep 1827 Andover, Hampshire
Father: William BURCH Mother: Ann
there are several other siblings

Debbie