Episode #1.3 - S1-E3
Continuity mistake: When Elizabeth is about to leave for Hunsford there are three trunks (1 large, 2 small) visible in the hall. As Elizabeth moves into the study the servant removes the top trunk to take to the carriage. In the next shot of Elizabeth in background only the large trunk remains. In subsequent views of Elizabeth the large trunk remains in view. When Elizabeth farewells her father and leaves the room the servant is seen picking up the second small trunk which has magically reappeared. (00:23:30 - 00:24:10)
Answer: The children were probably left with a nanny or relatives. It's very likely that the Longborns would have left them at home. Travelling for days by horse-drawn carriage over bumpy dirt roads is difficult in the best of circumstances, and particularly hard during winter. The trip would be too arduous for young children.
raywest ★