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Prince Harry is a traditionalist at heart.

The royal, who announced his engagement to Meghan Markle on Monday, asked her mother, Doria Ragland, for permission before popping the question, a source tells PEOPLE.

Markle has been outspoken about her love and admiration for her mother in the past, so it’s no surprise that Harry would seek out Ragland’s blessing before asking Markle to marry him. In an August 2017 article for Glamour, Markle talked about the impact her mother had on her, calling Ragland her “best friend.”

Harry got to know Markle’s mother throughout their relationship. Ragland even attended the closing ceremonies of the 2017 Invictus Games with Markle and Harry in September 2017. The trio watched the ceremony along with the couple’s friends Jessica Mulroney and Markus Anderson (who introduced Markle and Harry in July 2016) in a private box.

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The newly engaged Harry and Markle, who dated for a little more than a year before announcing their engagement, are set to wed in Spring 2018.

• Reporting by DAN WAKEFORD