John Mcknight List of directors and agents named John Mcknight. Found 2 results. JOHN MCKNIGHT Registered Address: 1620 DEEP RUN RD. WHITEFORD MD 21160 Appointed in one company. Go To Profile JOHN MCKNIGHT Registered Address: 1736 WHITEFORD ROAD DARLINGTON MD 21034 Appointed in one company. Go To Profile