William Franks (died 1790)

William Franks (died 1790) was an early English property developer who was instrumental in the development of Percy Street, Rathbone Street and Charlotte Street in central London in the area now known as Fitzrovia.

He married a member of the Pepys family and built the Percy Chapel in Charlotte Street.

[3] In the 1760s, Franks, a "gentleman", was granted various building leases by land-owners Francis and William Goodge on ground in the area now known as Fitzrovia.

[3] In 1764–65, he built the Percy Chapel in Charlotte Street which was opened in January 1766.

It stood immediately opposite the western end of Windmill Street.