Arthur J. Thom...
It sounds like you're related to me. Joseph married Elizabeth Craig...were supposed to have brought over to the states with them..one Robert Cathcart who lived with them and then married their daughter Jane Thom when they both grew up. I can get back no further on either lines.
Robert Cathcart's parents...
James Cathcart B.1740 and Margaret Clark
Jane Thom's parents...
Joseph Thom B. 1743 and Elizabeth Craig.

So what do you think...are we related??? Do you have any more information back into Ireland then Scotland??

Terri Cathcart
Terri@bach.net