I thought our Family Bible was lost forever. All my cousins knew that the Bible existed, but no-one seemed to know where it was. Then, I made contact with a cousin that I never knew existed - my g. grandmother was married twice, and this lady (that I came across through Genes Reunited) was the descendant of my g. grandmother's second marriage, so her g.grandfather was my grandmother's step-father, and she got on very well with him.
After I'd known this long-lost cousin for a while, (I'd mentioned the Family Bible to her), she was helping her sister go through her late mother's effects. When she got there, her sister had already consigned several items to the rubbish sack, including a very battered old Bible ! As soon as she saw it, she knew what it was, and she has very graciously passed it over to me for safekeeping. It had never occurred to me that this Bible would have been passed down through this family line.
You should never give up hope in finding lost heir looms.