When his father died in 1690, he received all the remaining real and personal estate, not otherwise bequeathed and was required to provide a comfortable maintenance for his mother, so long as she remained a widow.
His father said in his will that
. . . he had already given John a good trade, as well as some of his other sons, whereby they are in good ways for a living in this world, and have not in time past done for me as my son Crispus hath, who hath borne the burden of my work and taken care of me in all my long and tedious weakness and lameness for many years past." (Genealogical Register of the Descendants of Several Ancient Puritans, Volume 3 by Abner Morse)
On February 10, 1706/07, his aunt, the widow Abigail Brewer Luscomb, sold Crispus eight acres of her father's land that she had inherited when he died.
The records of the town meeting of April 15, 1718 report
Pursuant to an order from the Selectmen of Salem Capt John Breed Lt. Benja Potter & Crispus Richards of any two of them are appointed to pambulate and renew the bounds on the Lower part of the line betwixt Salem & Lyn & to meet at the house of Mr Joseph Sibley on Monday the twenty eight of April currant at Eight of the clock fore noon to Joyne with such as Salem has appointed for that service & to make return of their Doings. (Records of ye Town Meetings of Lyn, p. 9)
He died on May 17, 1763 in Lynn, Essex County, Massachusetts. He was buried in Lynn Cemetery
Essex County, Massachusetts was created on May 10, 1643 by the General Court of the Massachusetts Bay Colony, when it ordered "that the whole plantation within this jurisdiction be divided into four sheires."