Sir William Withey Gull, 1st Baronet (31 December 1816 - 29 January 1890) was an English physician to Queen Victoria. He was also a suspect in the Jack the Ripper murders.
 
Gull made some significant contributions to medical science, including advancing the understanding of myxoedema, paraplegia, anorexia nervosa, and Bright's disease.
 
2 1/4" x 4" signature hand signed, yours truly, William W Gull.