I was not aware of the origin of the name of the bird but found this interesting piece of information on the following Nature Canada site.
naturecanada.ca/what-we-do/naturevoice/endangered-species...
The Bobolink’s common name originates from a poem written by William Cullen Bryant back in the late 19th century. William wrote about a bird he then called Robert of Lincoln. This name was shorten to Bob of Lincoln, and finally became the name it has today: Bob o’Link. The poem was written on account of the bird’s striking appearance. During the breeding season, the male Bobolink looks like it is wearing a reversed tuxedo with a striking yellow cap. The male has black under parts and wings with 3 large white stripes and smaller stripes of browns and yellows. Females have more of a finch-like look with a black and yellow striped body and a pale yellow belly. In non breeding season, the males also share this similar colouration.