c sir John BURLACE v cook S c Eq can ab show of deed post case a heir exhibit  a bill for discovery of evidence concern land that be his ancestor the  defendant swear that he be a purchaser of the land and the heir demand a sight  of his deed and write but per cancellar he shall not see they for although the  heir prima facile have a legal title he may go into a court of law if he  please lady Shaftesbury v Arrowsmith Ves Jones v Jones Meriv but this court  will not compel the show of write to any person unless he have a equitable  title as a mortgagee c and that be the difference between a legal and a  equitable title this case as observe in Sugd l of vendor that edit appear to  be hasty report it seem now to be settle that a plea of purchase for valuable  consideration without notice be a good defence against a claimant under all  equitable title and extend to the production of the deed but the struggle have  beenwhether this protection shall avail against a legal title Jerrard v sander  Ves jun support the affirmative of this question so do Walwyn v lee Ves and  the last name case overrule stride v Blackburne Ves in which a contrary  doctrine be hold but William v lamb Br decide that against a legal title to  dower the plea in question will not hold the last mention case however may be  distinguish from Walwyn v lee and the other authority which concur in hold a  plea of purchase for valuable consideration without notice sufficient to  justify in equity the nonproduction of the title deed for dower be a mere  legal right and as a court of equity in assume a concurrent jurisdiction on  this subject profess act upon the legal right alone that court in analogy to  law where such a plea as that in question will not be look at decide that in  this instance the same plea be inadmissible in equity this analogy it be  obvious do not hold when the widow apply for equitable relief see roper l of  hush and wife with this exception as to dower so qualify it shall seem that  the plea will in a court of equity avail against a legal as well as a  equitable title beside the case refer to in the margin headnote see post c p c  p c p