Any judgment or order, rendered by said probate court pursuant to proceedings in said court, affecting and relating to any title of real estate prior to July 12, 1951, which judgment or order has been recorded in said probate court, is hereby confirmed and validated, and the title or interest affected by and relating to any real estate by any such judgment or order is hereby declared to be merchantable to the extent of any interest affected by any such judgment or order: Provided, That any person desiring to present proof of the invalidity or partial invalidity of any such judgment or order or of such proceedings relating thereto shall have one (1) year after the effective date of this act within which to bring proceedings attacking such judgment, order or proceedings: And provided further, That infancy, incompetency, or nonresidence shall not affect the operation of this act.