great-grandparent

The plot of land where Starbucks was birthed faces a little park where tourists grazing the market bring their takeout fish and chips; pastries; and, of course, Starbucks Frappuccinos, and, like an old great-grandparent sitting quietly in a corner, the original location is surrounded by its more modern spawn, perhaps gazing with both fondness and a tinge of wistful envy at its legacy.

The kind of people who have the time and the desire to wage a culture war on schools tend to be more of the grandparent or even great-grandparent age.

The length of those shared identical autosomal segments will total about 3,600 centiMorgans, a unit for measuring spans of DNA, while you and a first cousin or great-grandparent, at two additional degrees of remove, should share about a quarter of that.

In addition to his brother, Jackson is survived by his parents, grandparents, a great-grandparent and several aunts and uncles, among other loved ones.

You just do it by comparing DNA instead of last names or a common great-grandparent.