Johan Hendrik Swellengrebel
- Born: 26 Apr 1757, Utrecht, Utrecht, Netherlands
- Marriage (1): Johanna Henrietta Joan van Mierop on 25 Sep 1793 in Rotterdam, Zuid-Holland, Netherlands
- Died: 26 Dec 1842, 's-Gravenhage, Zuid-Holland, Netherlands at age 85
Johan married Johanna Henrietta Joan van Mierop, daughter of Joan Gerbrand Van Mierop and Maria Sara le Petit, on 25 Sep 1793 in Rotterdam, Zuid-Holland, Netherlands. (Johanna Henrietta Joan van Mierop was born on 28 May 1762 and died on 1 Feb 1823 in 's-Gravenhage, Zuid-Holland, Netherlands.)
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