In December 2013 several members of Tales of Cape Cod began an informal investigation of the history of the Olde Colonial Courthouse. As information was assembled and pieced together, the group began to question some of the long-standing views about the evolution of the building. Over time, the group has grown to include trained preservationists, and the work has been broadened to include on-site investigations. This article is a work-in-progress report produced by the individuals who have participated in this investigation. The hypotheses put forth below will be reviewed as more information becomes available.
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The Olde Colonial Courthouse was the second courthouse constructed in Barnstable County, MA. This building was used exclusively for court sessions. The county’s legal records were maintained in a separate building, the County House, located immediately to the east of the Sturgis Library. Very little information is available to date the construction of the Old Courthouse, its appearance, or the legal proceedings that took place in the building because virtually all of these records were destroyed when the County House burned on October 22, 1827.
Those records that are available indicate that the Olde Courthouse was built between 1763 and 1774. The date 1763 is suggested by an invoice submitted to Edward Bacon, a member of the Committee responsible for building a new courthouse in Barnstable County.
The transcription of this invoice reads:
Secondary historical accounts, e.g., books on the history of Barnstable County, typically date the construction of the Olde Courthouse in 1772 or 1774 without providing references to primary information or other sources. These dates are probably suggested by a well-documented protest that took place at the Barnstable Courthouse on September 6, 1774. On that date, a band of patriots barred the King’s judge from entering the building in protest of a decree that required all jurors to be appointed by the Crown’s local sheriff. According to an account of this event published in 1837, this was the “first open overt act done in the face of day without disguise, (in the controversy with Great Britain), which according to the British jurisprudence would be called treason."
The Olde Colonial Courthouse served as the Barnstable County courthouse until the current courthouse was completed in 1834. When its mission as a courthouse ceased, the building was sold to Sidney Ainsworth and subsequently deeded to Samuel Whitman on March 16,1840. Following the death of Mr. Whitman, the building and the grounds where it stands were sold for $77 to the Baptist Society in the East Parish of Barnstable on October 10, 1842. The building became the home of the Third Barnstable Baptist Church, organized on October 27, 1842.
The Olde Courthouse building was altered between 1842 and 1844 to meet the needs of the church. No formal records have been found that describe the specific alterations made to the building at that time; however, historical accounts and minutes of the Barnstable Baptist Association suggest that the alterations were extensive. According to numerous accounts the “historic old building . . . was turned on its site so it faced Rendezvous Lane rather than County Road.” Sprague  notes that Samuel Sturgis Crocker erected the spire on the building in 1842, and the minutes of the Barnstable Baptist Association in 1844 indicate that the alterations were costly and more than the fifteen founding members of the congregation could finance. According to these minutes:
Whereas, God in his providence, has given an impulse to his cause in North Barnstable, and enabled a few individuals to complete the erection of a commodious house of worship, and are unable to pay for it in full; therefore:
Resolved, That we recommend to the several churches composing this Association, that they appoint a Committee of three in each Church, to solicit subscriptions within their own bounds, to extinguish the debt.
Voted, That the Clerk be requested to write to several churches comprising this Association, and to state to them the condition of the Church in North Barnstable, and request immediate aid in their behalf.
In the following year, the minutes of the Association, referring specifically to the Third Baptist Church, state:
Friends abroad and at home have greatly aided them in discharging the debt upon their meeting house, and they are now encouraged to believe that ere long they will be free from all pecuniary embarrassment. 
Although this publication documents changes made to the building between 1845 and 1971 in considerable detail, it provides little information on the specific changes made to the building when it became a church.
The undated photograph, shown below, is believed to be the earliest picture of the Third Baptist Church. This photograph shows a simple rectangular building with two exterior doors on the west side facing Rendezvous Lane, a gabled roof, and a belfry and spire mounted above the entrance on the west end of the building. In general terms, this building conforms in style to other early New England churches.
Taking this photograph as a starting point, it is possible to relate other information and offer a hypothesis regarding the specific changes made to the building when it was converted into a church. First, Gustavous Hinckley (1822–1905), a resident of Barnstable and one-time president of the Barnstable Savings Bank, made several sketches of the Olde Colonial Courthouse from memory around 1885. These sketches show a three-bay rectangular building with a hip roof and centered cupola. The building faces the County Road (Route 6A), and the entrance to the building is through an enclosed porch located on the south side of the building. Rendezvous Lane is represented as running along the west side of the building.