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15. Rep. Rodney Frelinghuysen (R.-N.J.)

Minimum net worth: $20.35 million
Change from last year: +2.3%

The New Jersey lawmaker’s fortunes remained relatively stable in 2010, increasing slightly more than 2 percent.

About a third of Frelinghuysen’s wealth stemmed from multiple investments in Procter & Gamble stock. He owned $1 million to $5 million in the company and reported two additional investments held in family trusts. The larger of those two holdings was worth $5 million to $25 million.

The lawmaker’s father, the late Rep. Peter Frelinghuysen (R.-N.J.), was married to Beatrice Sterling Procter, a descendant of one of Procter & Gamble’s founders, The New York Times reported in a May obituary.

Frelinghuysen also added to his real estate portfolio, reporting a one-fifth interest in a Stockbridge, Mass., rental home valued at $100,000 to $250,000. The property produced no income in 2010. He also owned nearly 18 acres of undeveloped land in Frelinghuysen Township, N.J., valued at a minimum of $250,000 and a one-fifth interest in about 236 undeveloped acres in Stockbridge, Mass., valued at a minimum of $100,000.

Published with permission from CQ Roll Call.

Source: Roll Call|| Photo: Scott J. Ferrell | Congressional Quarterly | Getty Images