I'm reading George R.R Martin's "A Game of Thrones"...

("Tully" is a lineage in this context, "godswood" is a garden)

"Catelyn had been anointed with the seven oils and named in the rainbow of light that filled the sept of Riverrun. She was of the Faith, like her father and grandfather and his father before him. Her gods had names, and their faces were as familiar as the faces of her parents. Worship was a septon with a censer, the smell of incense, a seven-sided crystal alive with light, voices raised in song. The Tullys kept a godswood, as all the great houses did, but it was only a place to walk or read or lie in the sun. Worship was for the sept.
For her sake, Ned had built a small sept where she might sing to the seven faces of god..."


My dictionary translate "sept" as "tribe, clan (in ancient Ireland)"... does it make any sense in this context? I can't find a definition for "septon". Of course, these two words may have a particular definition in the novel, but if so, shouldn't these words be capitalized, or have any prior references? I see neither.