Question: Which author wrote the statement "The Massachusetts Circular Letter" who was a lawyer in colonial Massachusetts and a patriot against the British rule?

Context paragraphs:
Stephen Sewall: Stephen Sewall (December 14, 1702 – September 10, 1760) was a judge in colonial Massachusetts.  Born in Salem, Massachusetts, he was the son of Stephen Sewall, the clerk of court at the Salem witchcraft trials, and a nephew of Chief Justice Samuel Sewall, who presided at the witchcraft trials.  He was the uncle of lawyer Jonathan Sewall.

Lingua e Vita: Lingua e Vita is the official magazine of the British Interlingua Society (BIS).  Founded in 1965 as an initiative of Brian C. Sexton, "Lingua e Vita" is a continuation of the earlier organ of the BIS, the "Circular Letter".

British Interlingua Society: The British Interlingua Society (BIS; Interlingua: "Societate Britannic pro Interlingua"), established in 1956, works in Great Britain and the English-speaking world to promote the knowledge and active use of Interlingua, the international language.  Among the publications of the BIS is the transatlantic magazine "Lingua e Vita", with articles in English and Interlingua.  It has appeared since 1965, and previously as the "Littera Circular" or "Circular Letter".  A second BIS publication is "Contacto".  Founded in 1994, this magazine provides articles and regular features about Interlingua and the organization.  Contacto is written in English and in parallel Interlingua-English texts.

Look out circular: Look out circular (LOC) is a circular letter used by authorities to check whether a traveling person is wanted by the police.  It may be used at immigration checks at international borders (like International airports or sea ports).  In India, LOC has a given proforma which have identification parameters of criminals and help police to catch absconding criminals and stopping them from crossing borders.

Encyclical: An encyclical was originally a circular letter sent to all the churches of a particular area in the ancient Roman Church.  At that time, the word could be used for a letter sent out by any bishop.  The word comes from Late Latin "encyclios" (from Latin "encyclius", a Latinization of Greek ἐγκύκλιος "enkyklios" meaning "circular", "in a circle", or "all-round", also part of the origin of the word encyclopedia).

Massachusetts Circular Letter: The Massachusetts Circular Letter was a statement written by Samuel Adams and James Otis Jr., and passed by the Massachusetts House of Representatives in February 1768 in response to the Townshend Acts.  Reactions to the letter brought heightened tensions between the British Parliament and Massachusetts, and resulted in the military occupation of Boston by the British Army, which contributed to the coming of the American Revolution.

Circular letter of credit: A circular letter of credit was a letter of credit issued by a bank or related financial institution to a private person, usually an individual of means, which enabled that person to draw funds from correspondent banks while traveling.  This was considered safer than carrying large sums of cash.  Such letters were often issued on special paper with formal lettering and designs to discourage counterfeiting.  The circular letter of credit generally consisted of two or three separate items.  The first being the actual letter addressed to correspondent banks stating the amount of funds that can be drawn.  The reverse of the letter usually contained space to record the drawing of funds against the letter and the current balance.  The second item was a list of correspondent banks in the area where the letter holder expected to be traveling.  And the third was a signature card which was expected to be presented for comparison when drawing funds.  Banks typically charged around 1% of the value of the letter for its issuance.  Circular letters of credit were in many ways similar to circular notes which were in turn a precursor to later traveler's cheques.  Because of the expense involved, most financial institutions had minimum values for which they would issue such letters.  In the 19th century in the United States this was typically $500.  With the advent of modern electronic banking and ATMs circular letters of credit have largely fallen into disuse.

Circular Letter (Interlingua): The Circular Letter was an early Interlingua newsletter published from 1954 to 1965, when it was expanded and renamed "Lingua e Vita".  D. M. Hallowes, who became the Secretary of the British Interlingua Society (BIS), edited the publication.  Issue 9, dated March 1956, printed a suggestion that a British Interlingua organization be formed:

James Otis Jr.: James Otis Jr. (February 5, 1725 – May 23, 1783) was a lawyer in colonial Massachusetts, a member of the Massachusetts provincial assembly, and an early advocate of the Patriot views against British policy that led to the American Revolution.  His catchphrase "Taxation without representation is tyranny" became the basic Patriot position.

William Brattle: William Brattle (April 18, 1706 – October 25, 1776) was a physician, lawyer, soldier, and politician of colonial Massachusetts.  During the American Revolution, he was Major General of the Royal Militia and played a role in the Powder Alarm.  He was known as "the wealthiest man" in Massachusetts.

Supporting paragraphs: Massachusetts Circular Letter James Otis Jr.
Answer: James Otis Jr.