McCain’s 106-year-old mother expected to attend memorial, burial services in Washington
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Sen. John McCainJohn Sidney McCainOvernight Defense: Trump unveils new missile defense plan | Dems express alarm | Shutdown hits Day 27 | Trump cancels Pelosi foreign trip | Senators offer bill to prevent NATO withdrawal Bipartisan senators reintroduce bill to prevent Trump from withdrawing from NATO Mark Kelly considering Senate bid as Arizona Dems circle McSally MORE's 106-year-old mother is expected to attend his memorial and burial services in Washington and Maryland this week, according to the Associated Press

The senator credited his mother, Roberta McCain, in one of his books with "the strengths she taught [him] by example."

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"… [M]y mother was raised to be a strong, determined woman who thoroughly enjoyed life, and always tried to make the most of her opportunities," John McCain wrote. "She was encouraged to accept, graciously and with good humor, the responsibilities and sacrifices her choices have required of her. I am grateful to her for the strengths she taught me by example."

Roberta McCain married John McCain’s father at age 21 and moved around to accommodate her husband’s posting with the Navy. He would later go on to become a Navy admiral. She also traveled abroad often with her identical twin sister and accompanied her son on the campaign trail during his 2008 presidential bid, despite being well into her 90s.

John McCain died Saturday at age 81 after a more than year-long battle with an aggressive form of brain cancer.