Your grandfather's brother is your great-uncle. In some countries, he may also be called a granduncle.Know More
Similarly, your grandfather's sister is your great-aunt or grandaunt, and you are her great-nephew (grandnephew) or great-niece (grandniece). A great-aunt or great-uncle is also your mother's or father's aunt or uncle. Great-uncles, great-aunts, great-nephews and great-nieces are part of the immediate extended family in most genealogy structures.
Your spouse's grandfather's siblings are your great-uncles-in-law or great-aunts-in-law, and you are their great-nephew-in-law or great-niece-in-law.
Of course, kinship and familial relations are often different in cultures outside the United States. Thus, it is always important to study what relationships are deemed close family and extended family for your particular heritage.Learn more in Genealogy
When two cousins are the same distance in generations from the common ancestor, the child of cousin A is called a "cousin once removed" by cousin B. This is because the child of cousin A is one generation further from the common ancestor.Full Answer >
Your cousin's wife is your cousin-in-law because you are only related by marriage and not by blood. The "-in-law" suffix can describe the relationship between you and the spouse of any of your blood relatives.Full Answer >
A parent's first cousin is the child's first cousin once removed. "Once removed" symbolizes the difference in genealogical generation. There is more genealogical difference between a first cousin once removed than a first cousin because of the introduction of another ancestral line from the person that married into the family.Full Answer >
The first cousin of one's mother is referred to as one's first cousin, once removed. This phrase is also used to denote one's relationship with a first cousin's child. The phrase "once removed" specifies that there is one generation difference between the two relatives, while "twice removed" signifies members of a family that are two generations apart.Full Answer >