<Relationship Chart,Degree of Kinship>
This Family Relationship Chart depends on a rule of the Japanese civil law
Collateral relatives Lineal descendant Collateral relatives
┌──────────────────────────────┐┌───────────┐┌────────┐
┌ ┐
│ Relative ：Blood relationship of 6 degree relatives in, 4th Great-┏━┓ Grand/Great? │
│ Spouse, Grandparents┃６┃ Grand-Uncle/Aunt │
│ Relative by marriage of 3 degree relatives in. ┗┯┛ Great-Uncle/Aunt │
│ ┏━┓┌─┐ │ Grand-Nephew/Niece │
│ Blood relationship：┃ ┃│ │：Relatives by marriage, │ Great-Nephew/Niece │
│ ┗━┛└─┘ in-laws(affinity) 3rd Great-┏┷┓ Grand:genealogical terms │
│ Number in the square：the Degree of Kinship Grandparents┃５┃ the same as great │
│ ①～③：Spouse(relatives-in-law) ┗┯┛ │
│ │ │
│ │ │
│ 2nd Great-Grand-┏━┓ 2nd Great-┏┷┓ │
│ Uncle/Aunt┃６┃ Grandparents┃４┃ │
┗━┛ ┗┯┛ │
Ancestor │ │
│ │
│ Great-Grand-┏━┓ Great-┏┷┓ ┌─┐Great- │
│ Uncle/Aunt┃５┃ Grandparents┃３┃ │３│Grandparents │
│ ┗━┛ ┗┯┛ └┬┘-in-law │
│ │ │ │
│ (1st Cousin of Grandparents) │ │ │
│ 1st Cousin┏━┓ Grand-┏━┓ ┏┷┓ ┌┴┐Grandparents │
│ twice removed┃６┃ Uncle/Aunt┃４┃ Grandparents┃２┃ │２│-in-law │
│ ┗━┛ ┗━┛ ┗┯┛ └┬┘ │
│ │ │ Uncle/Aunt │
│ (1st Cousin of Parents) │ │ -in-law │
│ 1st Cousin┏━┓ ┏━┓ ┌─┐ ┏┷┓ ┌┴┐Parents ┌─┐ │
│ once removed┃５┃ Uncle/Aunt┃３┠─┤③│ Parents┃１┃ │１│-in-law │３│ │
└ ┗━┛ ┗━┛ └─┘ ┗┯┛ └┬┘ └─┘ │
------------------ ------------------ ------------------ ------│----------│------ ----------------│
┏━┷━┓ ┌─┴─┐ │
┏━┓ ┏━┓ Sibling┏━┓ ┌─┐ ┃ ┃ │ │ ┌─┐ │
┃６┃ 1st Cousin┃４┃ Brother/Sister┃２┠─┤②│ ┃ Self ┠┬┤Spouse│Brother/Sister│２│ │
┗━┛ ┗┯┛ ┗┯┛ └─┘ ┃ ┃││ │ -in-law └┬┘ │
2nd Cousin │ │ ┗━━━┛│└─┬─┘ │ │
----------------------------│--------------------│--------------------------│---(*1)-------------------│----│
┌ ┏┷┓ ┏┷┓ ┌─┐ ┏┷┓ ┌─┐ ┌┴┐ │
│ 1st Cousin┃５┃ Nephew/Niece┃３┠─┤③│ Child┃１┠─┤①│ Nephew/Niece│３│ │
│ once removed┗┯┛ ┗┯┛ └─┘ Son/Daughter┗┯┛ └─┘ -in-law └─┘ │
│ │ │ │ │
│ │ │ │ │
│ ┏┷┓ Grand-┏┷┓ ┏┷┓ ┌─┐ │
│ 1st Cousin┃６┃ Nephew/Niece┃４┃ Grandchild┃２┠─┤②│ │
│ twice removed┗━┛ ┗┯┛ ┗┯┛ └─┘ │
│ │ │ │
│ │ │ │
│ Great-Grand-┏┷┓ Great-┏┷┓ ┌─┐ │
│ Nephew/Niece┃５┃ Grandchild┃３┠─┤③│ │
│ ┗┯┛ ┗┯┛ └─┘ │
│ │ │
Descendant │ │ │
2nd Great-Grand-┏┷┓ 2nd Great-┏┷┓ │
│ Nephew/Niece┃６┃ Grandchild┃４┃ │
│ ┗━┛ ┗┯┛ │
│ Relationship Terms in English Language │ (*1) │
│ cousin relationship(the generations trace back to siblings) │ ┌┴┐ │
│ Nth Cousin R times removed 3rd Great-┏┷┓ │１│Stepchild │
│ ordinal number = degrees of collaterality Grandchild┃５┃ └┬┘ │
│ R times removed = generation difference ┗┯┛ ┌┴┐ │
│ in-law relationship(relative-in-law) │ │２│StepGrandchild │
│ relative by marriage and blood relatives of the spouse │ └┬┘ │
│ half/step relationship(apply when parent remarry) 4th Great-┏┷┓ ┌┴┐ │
│ half siblings have one parent in common but not both Grandchild┃６┃ │３│StepGreatGrandchild │
│ stepsiblings have no parents in common ┗━┛ └─┘ │
└ ┘
└──────────────────────────────┘└───────────┘└────────┘
Collateral relatives Lineal descendant Collateral relatives
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There are both relations of the father's side and the mother's side to all the ancestors.
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