HI
Not many on this site but figure to see if you have more information by now...:)
I have Theophilus Cross m Emaline C Plymate...
They were both born about 1815/1817, Cross from Nova Scotia, Canada... both could have died in AR or someplace in area of WI/Minn
I hope you have more by now on your Plymates side...
Good Luck
Kathy