From The Grey House:
Vincent closed the door tightly behind him and continued to the main staircase. A very wealthy San Franciscan built the house in the late 1800’s. Vincent acquired it in the early 1900’s and made repairs and renovations to most of the house and restored the grand marble staircase. He enjoyed walking down a large sweeping marble staircase. It made for a grand entrance. Reaching ground level, he turned right walked a few steps and turned right again, walking beside and then under the staircase.