Genealogical Society of Sarasota, Inc.
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Relationships

 
The following are common relationships you might encounter while researching your genealogy.
 
 
Aunt: the sister of your father or mother; the niece of your grand uncle
 
Cousin: the son or daughter of your uncle or aunt.  They share grandparents.
 
Cross-Cousin: The children of a brother and a sister.
 
Double First Cousins:  

1. the children of a set of brothers who married a set of sisters, or

2. the children of a brother and sister who marry another brother and sister.

3.  Cousins that are related on both the paternal side and the maternal side of the family. This could occur, for example, if two sisters in one family married two brothers from another family. Their offspring would be double cousins.

Father-in-law: the father of your spouse.
 
First cousin once removed: the cousin of your aunt; the grandson of your aunt.
 
First cousin twice removed: the cousin of your grand aunt;  the sister of your grand uncle’s cousin.
 
Grandfather: the father of your father or mother.
 
Grandmother: the mother of your father or mother.
 
Granddaughter: your child's daughter.
 
Grandson: your child's son.
 
Great grandfather: the father of one of your grandparents.
 
Great grandmother: the mother of one of your grandparents.
 
Great (Grand) uncle: the uncle of one of your parents.
 
Great Grand uncle:  the brother of your great-grandfather.
 
Great (Grand) aunt: the aunt of one of your parents; the brother of your mother’s aunt
 
Great Grand aunt: the mother of your grandfather’s cousin; the aunt of your cousin’s grandfather.
 
Half-brother: the male offspring from the remarriage of one of your parents.
 
Half Cousin: When half brothers or half sisters have children, their offspring refer to each other as half cousins
 
Half-sister: the female offspring from the remarriage of one of your parents.
 
Mother-in-law: the mother of your spouse.
 
Nephew: the son of your brother or sister.
 
Niece: the daughter of your brother or sister.
 
Ortho-Cousin: The children of two brothers or two sisters.
 
Second cousin: the son or daughter of either parent's first cousin.  They share great-grandparents.
 
Second cousin once removed: the grandnephew of your great-grandmother.
 
Second cousin twice removed: the grandson of your second cousin; the second cousin once removed of your mother.
 
Sibling: your brother or sister.
 
Stepdaughter: the daughter of your spouse's former marriage.
 
Stepfather: your mother's second (or subsequent) husband.
 
Stepmother: your father's second (or subsequent) wife.
 
Stepson: the son of your spouse's former marriage.
 
Third cousin: the grandson of your grandfather’s first cousin.  They share great-great grandparents.
 
Uncle: the brother of your father or mother; the nephew of your grandmother’s sister
 
Notes: When cousins are not in the same generation, they are considered removed.  Each 'removal' is a generation away from being first cousins.