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Male Charles B. Briggs Click to view Charles B. Briggs in the family tree

Charles B. was born on February 16th, 1873 in Charles, MA..1   Charles B.'s father was Charles P. Briggs and his mother was Mary Gardner.  His paternal grandparents were Charles Briggs and Eliza Allen. He had a brother and two sisters, named George A., Fanny S. and Mary Louise.  He was the youngest of the four children. He had two half-brothers and four half-sisters, named Henry H., Son, Julia A., Eliza, Ida and Catherine.1 

1 phelps.FTW @ Tree #0841
Further sources/citations:
World Family Tree Vol. 3, Ed. 1 @ Tree #2444, 2444.ftw