Final answer:
The founder of the Brandybuck family and original builder of Brandy Hall is not explicitly named in J.R.R. Tolkien's works. The reference text provided is not related to the Brandybuck family or Brandy Hall, thus an accurate answer cannot be formulated from it.
Step-by-step explanation:
The question pertains to the founder of the Brandybuck family and the original builder of Brandy Hall within the universe of J.R.R. Tolkien's Middle-earth, specifically in his works related to 'The Lord of the Rings' and 'The Hobbit'. However, the information provided in the reference text does not correlate to the Brandybucks or Brandy Hall. Therefore, I am unable to provide an accurate answer based on this text, as it seems to discuss a completely different subject - an old world colonial house and its current residents.
To accurately answer the original question: The founder of the Brandybuck family is not explicity named in Tolkien's works, but the Brandybuck lineage is one of the prominent Hobbit families in the Shire. Brandy Hall itself is the ancestral home of the Brandybuck family, located in Buckland near the Old Forest. It is known for being a large and extensive dwelling, but the specific individual credited with its founding is not detailed in the available canonical texts.