Seneschal Family Office

Overview

Seneschal Family Office was founded in 2004 by Jon M. Duncan as an independent advisory practice. It now operates as a multi-family office serving clients across the United States and abroad. Jeffrey M. Lang, Candace E. Duecker, and Tania P. Kaarvand serve as owners and partners. The firm allocates across private equity, real estate, commodities, and venture capital. It covers buyout, growth, seed, Series A, Series B, and venture stages. Geographic exposure spans North America and Europe. Confirmed technology focus includes enterprise software alongside FinTech and digital health. No specific portfolio holdings or co-investors appear in public records. Team size and total deployment figures remain undisclosed. The firm maintains its sole office in Tacoma. It holds membership in The Family Wealth Alliance, where Jeffrey Lang serves as co-chair for events. No dated operational events from the last 24 months are recorded in available sources. Seneschal functions as a fee-only fiduciary without product sales. Its structure centers on integrated planning for families navigating transitions rather than a dedicated investment platform or external fund commitments.