Question

Проверьте , пожалуйста, грамотность Dehan was born February 6, 1986 in Allentown, Pennsylvania, in the family of Jeff Dehan and Cynthia Bosch. Dehan has an older sister, Megan, and a nephew, Addison.

Answer 1

has an older sister - has an elder sister

Answer 2

Грамматически предложение выглядит правильно. Однако, есть небольшая ошибка в названии города. Вместо "Allentown" следует написать "Allentown, Pennsylvania" или "в городе Allentown, штат Пенсильвания". Также, можно добавить запятые для большей ясности:

Dehan was born on February 6, 1986, in Allentown, Pennsylvania, in the family of Jeff Dehan and Cynthia Bosch. Dehan has an older sister, Megan, and a nephew, Addison.