One wing of our family disappeared after a younger brother died very suddenly. His widow just moved away with her young family and was never heard of again, by us or her own family. We never knew why but assumed it must have been grief which affects people in different ways. I came across this person on the web with the same surname and made contact. She turns out to be her daughter, my first cousin! She had no idea she had any family left at all. It has been a very emotional reunion as we introduced her to all her relatives.