The dragons are named after important men in her life.
The smaller dragons are named after her brothers (Viserys being Viserion, the dragon that decides to be blue in season 7; Rhaegar being Rhaegal, the dragon whose storyline features such accomplishments as being smaller than Drogon, and dying in a less climactic manner than Viserion)
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Drogon is indeed named after her husband, Drogo. Though I suspect George R R Martin actually named Drogo after the dragon
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All that said, it does, indeed, seem a bit of a weird (lazy?) naming mechanic to fall back on when you think about how there are dragons named Balerion and Meraxes and Tessarion; however, it becomes much more tolerable when you also learn there were dragons named "sheepstealer" and "dreamfyre."
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Drogon seems like a happy medium
The smaller dragons are named after her brothers (Viserys being Viserion, the dragon that decides to be blue in season 7; Rhaegar being Rhaegal, the dragon whose storyline features such accomplishments as being smaller than Drogon, and dying in a less climactic manner than Viserion)
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Drogon is indeed named after her husband, Drogo. Though I suspect George R R Martin actually named Drogo after the dragon
'
All that said, it does, indeed, seem a bit of a weird (lazy?) naming mechanic to fall back on when you think about how there are dragons named Balerion and Meraxes and Tessarion; however, it becomes much more tolerable when you also learn there were dragons named "sheepstealer" and "dreamfyre."
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Drogon seems like a happy medium