John Strype, the eighteenth century editor of Stow’s Survey of London, claimed that Billingsley’s father came from Canterbury and was named Roger.
Billingsley’s spell at university undoubtedly fostered in him an interest in mathematics. When the eminent mathematician and former Augustinian friar called Whytehead was made homeless, Billingsley took him in and became an accomplished mathematician himself. In 1570, after Whytehead’s death, Billingsley translated into English and published Euclid’s Elements of Geometry, perhaps with the assistance of the noted astrologer and mathematician Dr. John Dee, who provided the preface.
By 1572 Billingsley was a London customs official employed by his fellow Haberdasher, Thomas Smythe†. In 1579 he was granted a dispensation from the legislation prohibiting customs officials from engaging in trade.
Billingsley was first returned to Parliament for London at a by-election in September 1585, but he never took his seat as the parliamentary session had effectively ended six months earlier.
Many of the bills to which Billingsley was appointed to consider were introduced by the corporation of London, of which he was a member. One such measure sought to curb the number of new buildings in and around the City (24 Jan. 1606), while another aimed to prevent the subdivision of properties into tenements and to reduce the number of ‘inmates’ in each (27 Apr. 1604). Two more London bills sought to explain the Statute of Bankrupts (14 May 1604) and to improve the City’s water supply by sanctioning the building of the New River (31 Jan. 1606).
Billingsley’s remaining committee appointments included three measures connected with the House’s response to the Gunpowder Plot: two concerned the better execution of the penal statutes (6 Nov. 1605 and 22 Jan. 1606) and the third dealt with a proposal to hold an annual public thanksgiving (23 Jan. 1606).
Billingsley drafted his will on 1 Aug. 1606, in which he bequeathed 100 marks to Emmanuel College, Cambridge for the creation of a scholarship. Billingsley’s charitable gifts included £10 each to the poor of Christ’s and St. Thomas’ hospitals and the inmates of the four London prisons. A further £200 was assigned as a stock for the benefit of the poor of his home parish of St. Katherine Coleman, so long as his heirs were permitted to continue renting a piece of the churchyard adjoining his house in Fenchurch Street, where he had built a coach-house. His fifth wife Susan was granted a life interest in the house, together with its contents, which included ‘pictures, maps and painted clothes’.
