Roolwer

Roolwer's name appears to correspond to the Old Norse Hrólfr, which could mean that he is identical to either of two contemporary like-named bishops of Orkney.

The site of Roolwer's cathedral is unknown, although Maughold and St Patrick's Isle are possibilities.

[12] Another noted contemporary of Roolwer was Dúnán, an ecclesiast generally assumed to have been the first Bishop of Dublin.

[11] In fact, the surviving stone tower on this island appears to date to the mid eleventh century, and made have been erected by Roolwer himself.

Therefore, like Gilla Pátraic in Dublin, Roolwer's episcopacy in the Isles may well have begun in 1074 after Dúnán's death, and perhaps ended at some point during Gofraid Crobán's reign.

Stained glass in Kirk Maughold depicting bishop Roolwer (circa 1900).
One of several ruinous keeills in the churchyard of Kirk Maughold. According to the chronicle, Roolwer was buried at the "church of St Maughold ". [ 1 ] Whether this was the site of his cathedral is unknown. [ 2 ] [ note 1 ]
The eleventh-century stone tower on St Patrick's Isle may have been erected by Roolwer, [ 10 ] and the island itself may have been site of his episcopal seat. [ 11 ]