Lytton
From The Fifth City Wiki
"Lytton. He was more than our financier. He was our courage. He inspired us when we faltered."[1]

Charged with financing the campaign, Lytton was the second-oldest member of the Seven. His and his wife's knack for raising money was vital to the quest for Nidah, and the pair took donations from bankers, nobles, and anyone else with money and a lust for eternity.
After his failure, he fled to Low Barnet, where his entire lower half has been encased in coral and has been merged with the wall of the church. Broken, Lytton has given up on his quest; he wouldn't be able to continue even if he tried, given his current condition.[2]