August 15, 2019, marks the one-year anniversary of Senator John McCain's death, who passed away at age 81 due to complications stemming from brain cancer.

McCain's memoir, "The Restless Wave," was released in May.

He and wife Cindy McCain quietly sat on a fortune of more than $200 million, largely due to Cindy's stake in one of the largest Anheuser-Busch distributors.

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August 25, 2019, marks the one-year anniversary of Senator John McCain's death.

He passed away on August 25, 2018, at age 81, shortly after his family announced he would no longer continue receiving medical treatment for brain cancer. He had reportedly been spending time at his ranch home in Sedona, Arizona, where he was receiving a flood of visitors as he battled glioblastoma, reported Town & Country.

In honor of his death a year later, his daughter, Meghan, took to Twitter to express her grief and his wife Cindy encouraged others to perform acts of civility. In a statement, Democratic presidential candidate Joe Biden also encouraged others to engage in civility acts, calling McCain "a political giant" and "a genuine American hero."

McCain's new memoir, "The Restless Wave," was released in May 2018. You may know McCain as the 2008 Republican presidential nominee, a Vietnam war vet, or an advocate for more civil politics.

What you may not know is that McCain and his wife Cindy sat on a private, but hefty fortune.

He was reportedly worth $16 million, according to Celebritynetworth.com. But that's only a fraction of what was his wealth — the rest came from his wife, who is an heiress to Hensley & Co., one of the largest Anheuser-Busch distributors.

She reportedly inherited a major stake in the company and became its chairman when her father, the company's founder, passed away. She currently has a net worth around $200 million.

A prenuptial agreement dictates that the McCains' money is in Cindy McCains' name, reports the New York Times.

Take a look inside their fortune.