Jim Heaslip

Uncle Jim is the uncle of Violet Heaslip mentioned in Granny's Pet Plan.

In The Ordinary, Extraordinary Botsfords when Violet shows a family tree, her father is indicated to be her mother Ms. Heaslip's brother, as they share the same parents.

This means that Violet's uncle is also Violet's father.

This means that Violet and Violet's sibling have only one set of grandparents.

Violet's grandmother and Violet's grandfather are not indicated to be siblings, although Violet's grandfather's brother has a line connecting him to his brother, indicating some unexplained relationship between the two.