Postscript:
Karen was married in 1950's (-> L) but divorced in 1960's. In 1970's, her surname may still have been L, but she may have reverted to her maiden name, P. Although she was Fearing at the time of her first marriage, it is unlikely that she reverted to that.... She wasn't Thomas at that stage. At her second marriage she was recorded as both L and P before becoming T. She could have remained as T after this second marriage in 1970's - depending whether she divorced again!
Her mother, Ancell, was married three times (at least) being nee Larg -> Pratt, Cowdie, Fearing...
Regards
Bruce42