eight that he doth not certainly know when the said complainant Rose was first admitted tenant of the copyhold messuage and lands now in question nor can tell what estate she had therein upon her said admittance neither doth this deponent know anything else of the matters in this interrogatory further enquired of saving this that she the said Rose or some for her is in the possession of the said messuage and lands and so hath been for the space of these twenty years or thereabouts of this deponent's own knowledge