Uncle is to aunt as father is to mother.
The analogy for "uncle is to aunt as father is to" is "brother." In this analogy, uncle and aunt are siblings, just like father and brother are. The relationship between uncle and aunt is the same as the relationship between father and brother, as they are both pairs of siblings.
She is your Great Aunt or your Grandmother.Breaking it down, your father's uncle is your great uncle. Your great uncle's brother is also your great uncle (or your grandfather), and his sister is your great Aunt (or grandmother).
She is your Great Aunt or your Grandmother.Breaking it down, your father's uncle is your great uncle. Your great uncle's brother is also your great uncle (or your grandfather), and his sister is your great Aunt (or grandmother).
The brother of your aunt's husband is not your uncle. Also the brother of your uncle who is not your uncle is your father.
To your uncle, you are his niece or nephew.
Sister-in-law describes a female. Brother-in-law describes a male.
Either your uncle or your father
Your uncle's brother can be your father, your father's brother/your uncle, your mother's brother/your uncle, an uncle-in-law maybe if he's married to your aunt. Too many possibilities to be certain. Your uncle's brother can be your father, your father's brother/your uncle, your mother's brother/your uncle, an uncle-in-law maybe if he's married to your aunt. Too many possibilities to be certain. Your uncle's brother can be your father, your father's brother/your uncle, your mother's brother/your uncle, an uncle-in-law maybe if he's married to your aunt. Too many possibilities to be certain.
Your father's brother is your uncle. His wife is your aunt.
Since your aunt is sister to your mother or father. Your aunt's dad is your mother or father's dad. You would call him your grandfather. Your aunt may also be the wife of your parent's brother. In that case, you are not related to her father.
Your aunt's great uncle's father is her great grandfather, or is not related to her at all if the great uncle married a sister of her grandfather).He would then be your great great grandfather - or not related to you at all.
Your father's brother is your uncle. Your uncle's wife is your aunt (and your father's sister-in-law). Her sister is not related to you or to your father, but is your uncle's sister-in-law.