Being, however, of industrial habits, and wishing to lead a mercantile life, he entered as clerk in G.G.&S.
[1] They had twelve children[2] by this marriage, including Leo G. Thebaud, a founding student and instructor of Seton Hall University.
Upon the death of his father-in-law in 1834, Thebaud moved to New York, having purchased a mansion known as LeRoy Place in Bleecker Street, where he lived for many years, though he retained a country seat at Morristown.
Soon after his retirement, Thebaud with his wife and daughter visited numerous relatives in Europe.
He was much respected by his fellow citizens, who attended his funeral in large numbers and caused the town flag to be lowered in this honor.