Can't say I am actually researching the Locke's yet, but I have the following in my tree if it helps at all:
Helen Lockie m. Thomas Barr, giving birth to children in Dalserf in 1825 and 1833. My link to her is through daughter Matilda Emma Ashton Barr, from whose OPR birth registration I got Helen's name. I have no birth or marriage information on Helen (yet), but she is buried in Dalserf churchyard (d. 1 Oct 1879, age 77.)
If you can connect to the above, I can bring you forward in time through her daughter Emma.
Regards, Mary Ellen