в 18 лет он женился на Энн Хатауэй,

в 18 лет он женился на Энн Хатауэй, с которой имел 3 детей

Результаты (английский) 1:

at 18, he married Anne Hathaway, with whom he had 3 children

Результаты (английский) 2:

at 18, he married Anne Hathaway, with whom he had three children

Результаты (английский) 3:

In 18 years, he was married to Anne Hathaway's cottage, which had 3 children