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.
 
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.

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-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.
 
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.