You just never know what you may find. This can sometimes be true of family documents which undergo conservation.
Today in the studio I removed a modern, browned and acidic backing board from a wedding certificate dated 1863. In contrast to the beautiful engraving and hand-written names on the front of the certificate, the back told a sadder tale. Several stamps from the war office and pension office and a written inscription imply that the wife was later widowed and required her certificate as evidence of marriage to her military husband.
If you’re currently researching your family history, perhaps the answers to some of your questions may lie hidden in your home on inherited engravings or certificates?