Henry Billings Brown,
Kolze v. Hoadley — Opinion of the Court
“ But where a bill is filed to foreclose a mortgage, and it appears by the bill itself that the mortgage has been fraudulently released to the mortgagor by a deed of which plaintiff had no notice, and the fraud is a mere incident, the bill is still one to recover the contents of a mortgage, within the meaning of the act, and will not lie in a Federal court unless the plaintiff's assignor might have maintained the bill if no assignment or transfer had been made. ”
