Lewis Keseberg, Donner Party

 This baby was presumably given his father’s full name, but he is always referred to as "Louis (or Lewis), Jr." He was apparently born on the overland journey. On June 3, 1846, diarist Edwin Bryant reported:

A wagon belonging to a German emigrant named Keyesburgh, whose wife carried in her arms a small child, and was in a delicate condition [i.e., pregnant], was upset, and the woman and child precipitated in to a pool of water... the woman and child escaped without material injury.