Baptism of Mary Jane Davies

[Robyn]

Hello everyone,
Apologies if I've posted in the wrong area. I'm searching for a baptism of Mary Jane Davies born abt.1821 in Devon, possibly Tavistock but not altogether certain. I don't know who her parents or siblings were. In 1840 she emigrated to the US. In about 1842 she married Frederick Probst b. abt 1804 in Hamburg, Germany. She died in 1844 in Yonkers, New York. Any help to find her baptism and early life in England would help he greatly. Thank you.