I don't have enough information to say who Lindsey is exactly. She could be an ordinary person living in New York, or she might be someone with a particular profession or talent.
In 'my 600 lb life lindsey story', Lindsey is probably a person whose life has been significantly affected by her weight. She may be facing various health risks and trying to turn her life around. We can assume she is someone with a unique story, full of struggles and hopes related to her weight situation.
Johanna Lindsey was a prolific writer of romance novels. Her works often transport readers to different historical settings. Regarding the 'Three Complete Novels', not knowing the specific titles makes it hard to be more precise. But her novels usually have characters that are full of charm and her stories are filled with passion and drama.
Bobby Sands was an Irish republican. He was part of the hunger strike in the Maze Prison. Sands was protesting against the British government's policy of criminalizing IRA prisoners. His sacrifice brought international attention to the situation in Northern Ireland and became a symbol of the struggle for Irish independence.