the 1851 merely gives born Iom for both - however judging from names + marriage parish I suspect
Elizabeth d/o Edward Kermode + Elizth Gell bapt Marown but last child in this family bapt Santan
Richard s/o Robert Bridson + Jane(ann in one bapt entry but suspect a mis-entry as child was also Ann) nee Bridson - you will need check out any wills etc but names of children match well with gparents and uncles/aunts