His full name was Henry Schreiner Stellwagen.
His widow, Mary applied for a pension after his death in 1866 and received $30 per annum, possibly per month. I wasn't able to read the document clearly.
The USS Constellation is still afloat and currently is a museum ship in Baltimore, Maryland.
From the April 30, 2002 Baltimore Sun describing the cabin of Captain Henry Stellwagen on board the USS Constellation.
.The captain slept in a bunk as opposed to the hammocks his men slept in. Plus, he had a small tub where he could bathe, instead of using deck hoses like his men had to. The sailors used a plank suspended over the bowsprit to relieve themselves while Stellwagen had his very own "seat of ease."
And, of course, there was his spacious cabin he had to himself.
Sometimes It is Good to be Captain. --Old B-R'er