Pronoun antecedent. (20 characters)?

Do these sentences have the correct pronoun antecedents? 1. One person who disagreed with Douglas gave their views in an angry editorial. 2. When I visited in Florida, my cousin and I took a canoe trip through the Everglades. 3. Everyone with us canoeing in the Everglades was delighted that they were part of the tour.

1. no, should read: One of the people who disagreed with Douglas gave his opinion in an editorial agry. 2. yes 3. yes

Paddling Halfway Creek, Everglades National Park 1/21/2009