Gillian...did your James ever come to Ontario, Canada. I have a James Lumsden who is residing in Parry Sound" The Sound" according to the 1871 census. At that time he is listed as being 54 years old which would make him born about 1817. There is also a Lumsden Cemetery in McDougal Township, Parry Sound, Ontario. If this is your James I would love to hear from you....my GGrandfather being from Parry Sound married a Maggie "Margaret Lumsden"