Hi Mark,
What do do you want to know about the McElwains of our Line
Alfred McElwain (my Great Grandfather) Married in 1853 and again in 1857 (Bigamy?)
He then ran to India in the 109th Regiment as the Regimental Tailor (corporal), from 1858 to 1881
BUT, he was using the name Alfred McDonald alias McElwain until 1865 and then changed it to William McDonald, My Grandfather William was the last to be born on India in 1870
Get in touch and we can compare notes, I think his father John was married in Liverpool 1828 and I think the same John had a son baptised in Manchester Cathedral, William in 1831, this child may have been Alfred, there are various things that seem to bear this out
Mac