Crocker and Churchill

John Crocker born 1810-1811 in Cornwall married Jane Churchill also born 1811 in Dorset. Married St James, Poole Dorset in 1836. I suspect Jane's father was Frederick Churchill and mother Jane. If anyone can find the mother's surname that would be wonderful. I would also like to find out who the parents of John Crocker were? Any help would be greatly appreciated.