The latest addition to the decoration of Santiago Capital’s meeting room, at the firm’s office opposite the Pepper Canister Church in Dublin 2, is an enlargement of a painting by Irish artist Julie Potter covering an entire wall. The night city scene is warmly lit by a lamppost. Chief executive Graham Cawley says this is part of an effort to make people comfortable when they visit the office. Our interview will certainly show that personal relationships are key to the growth of an alternative lender that did not exist six years ago, and has now issued €150 million in loans,…