Does anyone have any information on John Lowther, my 2nd Gt. Grandfather. He was in The Royal Irish Constabulary from around 1830. He was born in Londonderry in 1809 to father John. He was married to Eliza and had 4 sons, Samuel, Robert, Richard and Edward, and 1 daughter Mary Elizabeth. He later went on to become a Gaol Governor. His two eldest sons, Samuel and Robert were also in the RIC, but later moved to Liverpool with their mother around 1860.