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Amedeo Avogadro
He father was a distinguished lawyer and senator. His major contributions to science were; atomic weight, Avogadro's Law, and Molecular weight.
https://www.britannica.com/biography/Amedeo-Avogadro -
Bernard Spilsbury
He was a father of four children, three boys and one girl. His father was a chemist and he essentially took into his fathers footsteps. His contribution was that he was one of the first people to do autopsies in a general hospital to help determine cause of death. He sadly committed suicide after two of his children died.
https://blog.wellcome.ac.uk/2011/09/06/before-dna-20th-century-forensics/ -
Edmond Locard
His fields of study were medicine and law. His major contributions were; he helped create the first police laboratory, Locard's exchange program, and was known as Sherlock Holmes of France.
http://aboutforensics.co.uk/edmond-locard/ -
William Bass
He has no children, but he is married to Carol Bass, he studied to be a forensic anthropologist. His major contribution was Body Farm, which is a research facility that is used to study decomposition in a controlled environment.
https://www.encyclopedia.com/science/encyclopedias-almanacs-transcripts-and-maps/bass-iii-william -
Alec Jeffreys
He is married and has no children, he was born into a middle class family, but his father still encouraged him to pursue his passions. His major contribution was DNA profiling, which changed the way that police collect evidence and help determine if a person is innocent or guilty.
https://www.academickids.com/encyclopedia/index.php/Alec_Jeffreys