In terms of genealogical relationships, a great niece is the child of one's niece or nephew, while a half great uncle is the half-brother of one's grandparent. Legally and socially, marriage between a great niece and a half great uncle would not be prohibited in most jurisdictions, as they are not closely related by blood. However, such a relationship may still be viewed as controversial or unconventional due to the significant age gap and familial ties.
A half-niece and her uncle are expected to share about 12.5 of their DNA.
The site stripped the parentheses from the question. It should read: "What is the technical term for the familial relationship you'd have with your half-niece's (daughter of half-brother) son?" Your half-niece is your half-sibling's daughter. So what is the term for your half-niece's daughter, in relation to you? My first best guess would be "half-grandniece", but that doesn't sound right to me, and I guess it with absolutely zero authority. Hopefully someone can give the correct answer.
NO
Yes , your great aunt and your niece will share some but not all of your DNA. In fact, you will probably share much less than half with either of the, That is, of course, assuming that your great aunt is directly related to you, and not your aunt by virtue of being married to your great uncle.
If you cousin full blood first cousin or once removed like you parents Cousin then you first Cousin or once removed and so on comes first.Becouse full First cousin or once removed etc they are 50% related to you.Half Uncle is 25% as half of 50.But however you must been 18 to been next of kin and if you cousin under 18 and if you half Uncle is 18 or over then he whould act as next of kin before you cousin.I give you guide.People you 100% RelatedFull Sibling 100% becouse both form same parents and full SiblingChildren 100%people you 50% Relatedhalf Sibling is 50%Parent is 50%Grandparent reather its Great grandparent and so on is 50%Grandchild and Great Grandchild and so on is 50%full blood Aunt and Uncle is 50%full blood first Cousin or full first Cousin once removed and so on is 50%full Niece or Nephew is 50%full Grand Aunt or Uncle or full blood Great Grand Aunt or Uncle and so is 50%full grand Niece and Nephew and Great Grand Niece or Nephew and so is 50%So 25% Relatedis full seconed cousinhalf blood Aunt and Unclehalf blood first Cousin or half First Cousin once removed so onhalf blood Niece or Nephewhalf blood grand Aunt and Uncle blood Great Grand Aunt or Uncle and so onhalf blood grand Niece and Nephew or Great Grand Niece or Nephew and so on.I Stop there becouse after that anyone who is less then 25% Related is very distand Related to you!.
Technically, the baby would be your half-niece or half-nephew, and you would be their half-uncle or half-aunt. But many people dislike the term half or step (I have two stepsons and one natural son) and only for official purposes would I use the term half or step. So I'm with C3 Shooter on this, treat them as your nephew or niece.
If your sister-in-law is still married to your brother and her daughter is the biological child of your brother you would be the child's great aunt or great uncle. If your sister-in-law is the sister of your husband, her daughter's baby is your great niece or great nephew, and you are the baby's great aunt or great uncle.
The children are both your cousins[uncle's children]and your nephew and niece[sister's children].
If the marriage was legal under the laws of the state in which it was conducted, it is legal in ALL states.
The niece could be the daughter of the sister-in-law's sibling and not related to you, so you could marry her. However, the niece could also be your mother or your aunt, in which case you could not marry her. Erm, but whover readwhat this guy just wrote, I expect you're wondering WHY WOULD YOU EVEN BOTHER? DON'T YOU HAVE ANYTHING BETTER TO DO??
Your grandfather's half brother is you great uncle. Some would insist on calling him your half-great uncle, but the English language has not had a need to get that specific and complex about such distant relationships.
A Great half uncle.