There is an entry into Canada at Quebec on the Tunisian arriving April 27, 1913 from Liverpool. The entry reads as if this individual was deported upon arrival.
Thelwell, John, 33, $5.00 in possession, deport stamped and a number 894416 (case file # ?), fare provided by Salvation Army, married, never in Canada before, could read and write (that was a necessity for immigration as it proved you could earn a living and would not be a "burden" on Canada), b. England, worked as ?oapcokr in England (can't understand what his occupation could be), farm labourer in Canada, heading for Linwood, Ontario.
http://www.cic.gc.ca/english/resources/publications/legacy/chap-3.asp#chap3-4This man might have faced deportation because he didn't have quite enough money to satisfy rules
For entries into the UK there is a record which might link to your John.
On the Corinthian which arrived London Jan 5, 1916 from St. John New Brunswick is John Thelwell, 33, labourer, Canada last country of permanent residence, reason for deportation - criminal assa(ult)?
Debbie