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Lincoln Parkes Jeffries (1874–1939) of Lincoln Jeffries and Co, Gun Maker
1874 Born the son of George Lincoln Jeffries and his wife Jane Elizabeth Myram
1891 Living at Groveley Cottage, Alvechurch: George L. Jeffries (age 45 born Norwich), Gun Maker - Employer. With his wife Jane E. Jeffries (age 42 born Birmingham) and their six children; Lincoln P. Jeffries (age 17 born Birmingham), Gun Maker Apprentice; John C. Jeffries (age 15 born Kings Norton); Robert Jeffries (age 9 born Alvechurch); Bertram Jeffries (age 4 born Aston); Madeline Jeffries (age 6 born Alvechurch); Hilder Jeffries (age 2 born Alvechurch). 
1911 Married Alice Pearce
1939 December 10th. Died. 'The death took place on Monday of Mr. Lincoln Parkes Jeffries, 120, Steelhouse Lane, Birmingham, a well-known gunmaker who had been in business in the city for nearly fifty years. He was sixty-seven years of age. Mr. Jeffries was one of the few master men who could manufacture every part gun. His great-grandfather was a gunmaker at Norwich in 1779, and since then members of the family have been associated with the trade. Mr. Jeffries, who was born at King’s Heath, was apprenticed to Mr. Benjamin Edwards, Newton Street, in 1893. He afterwards started business on his own account and rented premises in Whittall Street. About twenty-five years ago he moved to Steelhouse Lane, where he continued to manufacture sporting guns and rifles. His father was the patentee of the Lincoln air rifle. Mr. Jeffries leaves a widow, two sons and one daughter.'
1939 Probate to his widow Alice Jeffries and sons Lincoln George Jeffries and Arthur Jeffries, manufacturers.