Hi Ken and thanks for your very informative reply.
The information that my Joseph Mason Woulidge became a soldier is from his daughter Sarah Ann's baptism record which I saw on microfilm this summer at the Lancashire RO. 21 September 1855 Saint Mary Lancaster. Earlier in the month on her birth cert his occupation was journeyman joiner, so I assumed he had just signed on.
His DOB was 15/ 7/ 1829 -- on the island of St Helena but the family definitely moved back to England in April 1836, ( I checked all the EIC army muster rolls at the British library one year )
He is in Manchester in the 1841 census, although missing in 1851, (lost in the rain damaged section no doubt) and marries there in 1852. The only further info I have on him is his daughter's birth certificate and baptism record.mentioned above, taking place at Lancaster in 1855.
The local papers are a source that never entered my mind. Thanks for the suggestion. I do not live in the UK, so this and Kew must go on my to do list, but I now have some idea of where to start.
Thanks again for your interest
Jane